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C1 adjective #5,500 most common 14 min read

bolster

Top 5,500

Practice it Examples Notes & Tips bolster in 30 Seconds

Explanation bolster in your Level:

Bolster is a word that means 'to help' or 'to make stronger.' Imagine you have a table that is shaking. You put a piece of wood under one leg. Now the table is strong. You 'bolstered' the table. In simple English, we use it when we want to make something better or more powerful. For example, 'I study hard to bolster my English.' This means I study to make my English better. It is a big word for a simple idea: adding support. Even though it is a hard word, you can think of it like 'giving a big hug' of support to an idea or a thing. If your friend is sad, you can bolster their spirits by saying kind things. You are making them feel stronger inside. Remember, bolster = make strong with help.

At the A2 level, you can start using 'bolster' to describe how you improve things. It is a verb that means to strengthen or support. You often bolster things that might be a little bit weak. For example, if you are playing a game and your team is losing, a new player might join to bolster the team. They make the team stronger so they can win. You can also bolster your health by eating good food and exercising. In sentences, it looks like this: 'The extra money will bolster our project.' This means the money helps the project be successful. It is a more professional way to say 'help' or 'support.' Try to use it when you talk about your skills, like 'I want to bolster my computer skills by taking a class.'

Bolster is a useful verb for B1 learners who want to sound more formal. It means to reinforce or provide additional support to something. It is very common in news and business. If a company is not doing well, they might 'bolster their sales' with a new advertisement. This means they are trying to make their sales stronger. It is also used for feelings and ideas. You can bolster someone's confidence by giving them a compliment. A key thing to remember is that 'bolster' usually implies that you are adding something to make a structure more solid. For example, 'The government passed a law to bolster the economy.' Here, the law is the 'support' that makes the economy 'stronger.' It's a great alternative to 'strengthen' or 'reinforce.'

For B2 students, 'bolster' is an essential word for writing essays and reports. It means to support or strengthen, especially by providing additional evidence or resources. When you write an argument, you need to bolster your claims with facts and examples. This makes your argument more convincing. In a professional context, a manager might bolster a department by hiring more staff. The word carries a sense of structural reinforcement. It is often used in the passive voice: 'The theory was bolstered by recent experiments.' This shows that the theory became more credible because of the new information. You should also know the noun form, which is a long pillow, but in most tests and conversations, you will use the verb form to describe making something more resilient.

At the C1 level, 'bolster' is a high-frequency academic and professional term. It signifies the act of providing a necessary prop or reinforcement to a system, argument, or physical structure. The nuance here is that bolstering often involves addressing a specific vulnerability or enhancing an existing strength to meet a challenge. For instance, 'The central bank's intervention was designed to bolster investor confidence amidst market volatility.' In this case, 'bolster' is chosen because it implies a strategic move to stabilize a fluctuating situation. C1 learners should be comfortable using 'bolster' in various collocations such as 'bolster an argument,' 'bolster a reputation,' or 'bolster defenses.' It is a transitive verb that demonstrates a sophisticated understanding of how systems and ideas are reinforced through external support.

For C2 mastery, 'bolster' should be used to convey precision in the mechanics of support and reinforcement. It often appears in complex socio-economic and philosophical discourses to describe the shoring up of foundational structures. A C2 user might discuss how 'the ontological arguments were bolstered by empirical observations,' or how 'geopolitical alliances are bolstered through multifaceted trade agreements.' At this level, one recognizes the subtle difference between 'bolstering' and 'buttressing'—where the former often suggests an internal or integrated reinforcement, while the latter might imply a more external, structural prop. The word also appears in literary contexts to describe the internal fortitude of characters. Mastery involves not just knowing the definition, but understanding the rhythmic and tonal weight 'bolster' adds to a sentence, providing a sense of gravitas and constructive intent.

Practice it Examples Notes & Tips

bolster in 30 Seconds

Bolster is a verb that means to support or strengthen something, often an idea, a system, or a person's confidence, by adding extra resources or evidence.
It comes from the noun for a long pillow, suggesting the action of 'propping up' something that might otherwise sag or fail under pressure.
Commonly used in professional, academic, and economic contexts to describe strategic reinforcement, such as bolstering an argument or bolstering the economy.
It is a transitive verb, meaning it always takes a direct object (e.g., 'to bolster the case' or 'to bolster spirits').

The term bolster is a powerful and versatile word that functions primarily as a verb, though it originates from a noun referring to a long, thick pillow. In contemporary English, especially within academic, professional, and journalistic spheres, to bolster something means to provide it with the necessary support to make it stronger, more effective, or more resilient. Imagine a bridge that requires additional steel beams to handle heavier traffic; those beams bolster the structure. Similarly, in the realm of ideas, if you are presenting a theory and you discover new data that confirms your hypothesis, that data serves to bolster your argument. It is not merely about adding volume; it is about adding structural integrity and credibility.

Physical Support: In its most literal sense, bolstering involves physical reinforcement. This could be adding a prop to a sagging roof or using a cushion to support one's back. In construction, engineers bolster foundations to prevent shifting.
Abstract Reinforcement: Most commonly, the word is used for non-physical things like confidence, morale, or an economy. When a manager praises an employee, they are attempting to bolster that employee's self-esteem. When a central bank lowers interest rates, the goal is often to bolster a flagging economy.

People use 'bolster' when they want to emphasize a proactive effort to prevent failure or to enhance existing strength. It suggests that the thing being bolstered might be under pressure, weak, or simply in need of an upgrade to reach a higher standard of performance. In a debate, a speaker might bolster their position by citing expert testimony or statistical evidence. This usage implies a strategic move—one doesn't bolster something by accident; it is an intentional act of fortification.

The recent surge in consumer spending has helped to bolster the retail sector after a difficult fiscal year.

The word carries a positive connotation of improvement and stabilization. You rarely bolster something negative; for instance, you wouldn't typically say someone 'bolstered a crime,' but you might say they 'bolstered a defense.' It is a word of construction and preservation. In the context of the CEFR C1 level, learners should recognize that 'bolster' is a sophisticated alternative to 'support' or 'strengthen,' offering a more precise image of adding a 'prop' or 'pillar' to something that needs it.

Scientists are looking for more evidence to bolster the theory of climate-driven migration patterns.

Furthermore, 'bolster' is frequently used in business and economics. A company might bolster its balance sheet by selling off non-core assets. A government might bolster its military presence in a sensitive region to deter conflict. In these scenarios, the word conveys a sense of preparedness and the shoring up of resources. It is a favorite in headlines because it is punchy yet formal, conveying significant action in just seven letters.

To bolster his chances of winning the election, the candidate focused on local infrastructure projects.

Psychological Context: In psychology, therapists might help patients bolster their coping mechanisms to handle stress. Here, it means making internal mental structures more robust against external pressures.

Positive affirmations can bolster a student's confidence before a major examination.

In summary, whether you are talking about a physical wall, a financial portfolio, or a person's mood, 'bolster' is the go-to word for describing the act of making something stronger by adding support. It is an essential part of the C1 vocabulary because it allows for nuanced descriptions of reinforcement across various disciplines.

The defense attorney called three more witnesses to bolster the defendant's alibi.

Using 'bolster' correctly requires understanding its grammatical role as a transitive verb, meaning it needs a direct object. You bolster something. The structure is usually: [Subject] + [bolster] + [Object] + [optional: with/by/through means]. For example, 'The coach bolstered the team's spirits (Object) with a motivational speech (Means).' This section will explore the various syntactical environments where 'bolster' thrives.

Active Voice: In the active voice, the subject is the agent of support. 'The new evidence bolstered the prosecution's case.' Here, the evidence is doing the work of strengthening the case.
Passive Voice: The passive voice is very common in formal reports. 'The argument was bolstered by several peer-reviewed studies.' This shifts the focus to the thing being strengthened.

When using 'bolster' in a sentence, consider the nature of the support. Is it a physical addition or a conceptual one? For physical objects, the usage is straightforward: 'We need to bolster the scaffolding before the wind picks up.' For conceptual objects, it often involves data, emotions, or social structures. 'The community organized a fundraiser to bolster the local library's budget.' Note how the verb elevates the tone of the sentence compared to simply saying 'help' or 'increase.'

She decided to take an extra course to bolster her resume before applying for the management position.

In academic writing, 'bolster' is frequently paired with words like 'claim,' 'hypothesis,' 'theory,' and 'argument.' It is a key verb for synthesizing literature. Instead of saying 'The author supports their claim,' you might write, 'The author bolsters their primary claim by integrating quantitative data from three separate longitudinal studies.' This sounds more professional and precise.

The findings of the study bolster the idea that early childhood education has long-term economic benefits.

In professional contexts, you will see it used regarding resources and reputation. 'The company launched a PR campaign to bolster its public image after the scandal.' Or, 'We need to bolster our customer service department by hiring five more representatives.' In these cases, it implies a deficiency that is being corrected through strategic addition.

The CEO's transparent communication helped bolster investor confidence during the market downturn.

Collocation with Adverbs: 'Bolster' is often modified by adverbs like 'further,' 'significantly,' 'greatly,' or 'effectively.' Example: 'The new policy effectively bolstered the security of the network.'

Extra training sessions were organized to bolster the skills of the junior developers.

When using the word as an adjective (bolstered), it describes something that has already received support. 'The bolstered defenses held back the enemy advance.' This participial form is very useful for describing states of being after an intervention has occurred. It indicates a change from a previous state of relative weakness to a current state of strength.

With a bolstered ego, the artist finally felt ready to exhibit their work in a public gallery.

Finally, remember that 'bolster' is a verb of action. It suggests that without this action, the object might fail, sag, or lose credibility. It is a word about active maintenance and fortification, making it indispensable for describing progress and stabilization in any field.

If you tune into a financial news broadcast like Bloomberg or CNBC, you will hear the word 'bolster' used almost every hour. Analysts discuss how central bank decisions bolster the currency or how quarterly earnings reports bolster a company's stock price. In this high-stakes environment, 'bolster' signifies a movement toward stability and growth. It is the language of the market, where every piece of information is evaluated for its ability to strengthen or weaken a position.

Political Discourse: Politicians use 'bolster' to describe their policy goals. You will hear them talk about bolstering national security, bolstering the middle class, or bolstering healthcare systems. It sounds more constructive and less aggressive than 'fighting for' or 'changing.'
Academic Lectures: In a university setting, professors use 'bolster' when discussing the evolution of theories. A history professor might explain how new archaeological finds bolstered previous assumptions about ancient trade routes.

In the world of sports, commentators use 'bolster' when teams acquire new players. 'The Lakers are looking to bolster their bench before the playoffs.' Here, it means adding depth and reliability to the team's roster. It implies that the existing team is good, but needs that extra support to reach the championship level. This usage is very common during 'trade deadline' periods in various professional leagues.

The manager brought in a veteran defender to bolster the backline for the final ten minutes of the match.

You will also encounter 'bolster' in legal dramas and real-life courtroom reporting. Attorneys talk about bolstering their case or bolstering a witness's credibility. If a witness has a history of honesty, that history bolsters their current testimony. Conversely, if a witness is caught in a lie, the opposing counsel will try to show that nothing can bolster their reputation now. In law, 'bolster' is about the weight of evidence.

The DNA evidence served to bolster the prosecution's claim that the suspect was at the scene.

In the tech industry, 'bolster' is used regarding cybersecurity. Companies are constantly looking for ways to bolster their firewalls and encryption protocols. When a major hack occurs, the subsequent news cycle is filled with talk about how other companies are bolstering their defenses to avoid a similar fate. In this context, 'bolster' is synonymous with 'harden' or 'secure.'

The IT department is working overtime to bolster our servers against potential DDoS attacks.

Daily Professional Life: In office meetings, you might hear a colleague say, 'I've added some charts to the presentation to bolster our argument for a higher budget.' It shows a professional focus on quality and persuasiveness.

We need to bolster our presence in the European market by opening a new branch in Berlin.

Finally, in literature and high-end journalism (like The New Yorker or The Economist), 'bolster' is used to describe the strengthening of abstract concepts like 'resolve' or 'determination.' A character might bolster their courage before facing a challenge. An editorial might call for bolstering the foundations of democracy. In these cases, the word adds a layer of literary weight and seriousness to the text.

One of the most common mistakes learners make with 'bolster' is confusing it with words that sound similar but have vastly different meanings. For example, 'boast' (to brag) or 'buster' (as in 'blockbuster'). Saying 'He bolstered about his car' is incorrect; it should be 'He boasted about his car.' Another common error is using 'bolster' when 'increase' or 'add' would be more appropriate, though this is more of a stylistic mistake than a grammatical one.

Confusing with 'Buttress': While 'buttress' and 'bolster' are synonyms, 'buttress' is almost exclusively used for physical structures or very formal academic arguments. 'Bolster' is more flexible and can be used for emotions like confidence, whereas 'buttress your confidence' sounds slightly unnatural.
Incorrect Preposition Use: Learners sometimes say 'bolster to' or 'bolster for.' Remember, it is a transitive verb. You bolster [something]. You can bolster something with something else, but you don't 'bolster to an idea.'

Another mistake is using 'bolster' for negative outcomes. You wouldn't say 'The rain bolstered the flood' unless you were speaking very ironically. 'Bolster' implies a helpful or constructive reinforcement. If something is getting worse, words like 'exacerbate,' 'aggravate,' or 'intensify' are better choices. 'Bolster' is about making something stronger in a way that is generally seen as a positive development for that thing.

Incorrect: The scandal bolstered the politician's bad reputation.
Correct: The scandal cemented the politician's bad reputation.

Redundancy is also a trap. Some people say 'bolster up and strengthen.' Since 'bolster' already means to strengthen, adding 'and strengthen' is repetitive. While 'bolster up' is a recognized phrasal verb, in formal C1-level writing, it is usually better to just use 'bolster' on its own. It is cleaner and more direct.

Redundant: We need to bolster up and support the foundation.
Better: We need to bolster the foundation.

Finally, don't confuse the verb 'bolster' with the noun 'bolster' in contexts where only one fits. While you can 'buy a bolster' (the pillow), you cannot 'buy a bolster' when you mean 'buy support.' This categorical confusion is rare but worth noting for beginners. At the C1 level, the mistake is usually using it in a context that isn't formal enough, or failing to provide the 'means' of bolstering, leaving the sentence feeling incomplete.

The team worked hard to bolster their defenses before the storm arrived.

Overuse: Because it is such a 'useful' academic word, some students use it in every paragraph. Vary your vocabulary with 'reinforce,' 'underpin,' or 'fortify' to keep your writing engaging.

By avoiding these pitfalls, you can use 'bolster' to significantly improve the sophistication of your English. It is a word that signals you have a grasp of formal registers and the nuances of structural support.

Understanding the synonyms of 'bolster' helps you choose the exact right word for your context. While 'strengthen' is the most common synonym, it lacks the specific imagery of 'bolster.' Other alternatives offer different nuances, from the architectural to the military. Let's look at how they compare.

Reinforce: To reinforce is to add more of the same thing to make it stronger. You reinforce a wall with more bricks or a troop with more soldiers. Bolstering is more about providing a 'prop' or a foundation.
Buttress: This is a very formal word. A buttress is a physical support built against a wall. In arguments, you 'buttress' a claim with facts. It is even more formal than 'bolster' and implies a very heavy, solid support.
Fortify: This has a military or protective connotation. You fortify a city against attack. You can also fortify food with vitamins. Bolster is less about 'protection from attack' and more about 'structural integrity.'

When should you use 'bolster' instead of 'support'? 'Support' is a very broad word. You support a friend, you support a roof, you support a political party. 'Bolster' is more specific—it implies that the thing being supported needs extra help to remain upright or effective. It suggests a proactive addition of strength.

While 'support' is a general term, bolster specifically suggests adding something to prevent failure or to increase power.

In a business context, you might 'shore up' your finances. 'Shore up' is very similar to 'bolster,' but it often implies a more urgent, perhaps temporary, fix for a failing situation. 'Bolster' can be used for both temporary fixes and long-term improvements. For example, 'bolstering the economy' sounds like a long-term strategic plan, while 'shoring up the budget' sounds like a quick fix to avoid a deficit.

The central bank's intervention helped to shore up the currency, but long-term reforms are needed to bolster the entire financial system.

Another interesting comparison is with 'prop up.' To 'prop up' something often has a negative connotation, suggesting that the thing being supported is weak and can't stand on its own. 'The government is propping up a failing industry.' 'Bolster' is more neutral or positive. It doesn't necessarily mean the thing is failing; it just means it is being made stronger.

To bolster the argument is to make it more convincing; to prop up an argument is to try and save one that is already falling apart.

Augment: To augment is to make something larger or better by adding to it. It is often used with 'reality' (augmented reality) or 'income.' Bolster is more about strength than size.

In summary, 'bolster' sits in a sweet spot of English vocabulary: it is formal enough for any professional setting, descriptive enough to provide a clear mental image of support, and versatile enough to apply to both physical and abstract concepts. Choosing it over simpler words like 'help' or 'strengthen' shows a high level of linguistic competence.

How Formal Is It?

Formal

Neutral

Informal

Child friendly

Slang

Fun Fact

The word transitioned from a noun (the pillow) to a verb (to support) in the late 15th century. It metaphorically suggests using a pillow to prop something up.

Pronunciation Guide

UK /ˈbəʊl.stə(r)/

US /ˈboʊl.stɚ/

The stress is on the first syllable: BOL-ster.

Rhymes With

holster upholster soulster pollster roller (near rhyme) stroller (near rhyme) folder (near rhyme) boulder (near rhyme)

Common Errors

Pronouncing it like 'ball-ster' (rhyming with 'hall'). It should rhyme with 'pole'.
Confusing the spelling with 'boulster'.
Failing to pronounce the 'l' clearly.
Stressing the second syllable (bol-STER).
Adding a 'u' sound like 'bow-el-ster'.

Difficulty Rating

Reading 4/5

Common in high-level texts but context usually makes the meaning clear.

Writing 7/5

Requires understanding of formal register and transitive verb usage.

Speaking 6/5

Sounds very sophisticated in conversation; useful for professional settings.

Listening 4/5

Distinctive sound, usually easy to catch in news broadcasts.

What to Learn Next

Prerequisites

support strengthen help strong pillar

Learn Next

buttress underpin substantiate corroborate fortify

Advanced

structural integrity empirical evidence fiscal stimulus psychological resilience geopolitical leverage

Grammar to Know

Transitive Verbs

You must say 'bolster the economy,' not just 'the economy bolstered.'

Passive Voice with 'By'

The case was bolstered by new witnesses.

Infinitive of Purpose

He studied hard to bolster his grades.

Gerunds as Subjects

Bolstering the defenses took several weeks.

Adverb Placement

The team was 'significantly bolstered' (adverb before the participle).

Examples by Level

I eat fruit to bolster my health.

I eat fruit to make my health stronger.

Verb in present simple.

The teacher gave me a sticker to bolster my mood.

The teacher gave me a sticker to make me happy.

Infinitive of purpose: 'to bolster'.

We need more wood to bolster the small chair.

We need wood to make the chair strong.

Transitive verb with 'the small chair' as object.

Good sleep can bolster your energy.

Sleeping well gives you more energy.

Modal verb 'can' followed by base verb.

He read a book to bolster his knowledge.

He read to learn more.

Past simple tense.

The team got a new ball to bolster their game.

The new ball helped them play better.

Verb used to show improvement.

They use sandbags to bolster the wall.

They use bags of sand to make the wall strong.

Present simple plural subject.

A kind word can bolster a friend.

Nice words help a friend feel better.

Object is a person.

The company hired more staff to bolster production.

They hired people to make more products.

Past tense 'hired' followed by infinitive.

She took a vitamin to bolster her immune system.

She took a pill to stay healthy.

Common health collocation.

The coach's speech bolstered the players' confidence.

The speech made the players feel brave.

Past simple tense.

We need to bolster the fence before the storm.

We must fix the fence so it doesn't fall.

Infinitive with 'need to'.

Extra practice will bolster your chances of winning.

Practicing more helps you win.

Future tense with 'will'.

The library added new books to bolster its collection.

The library got more books to be better.

Transitive verb with 'its collection' as object.

He used a pillow to bolster his back while sitting.

He used a cushion for support.

Literal physical usage.

The government is trying to bolster the local economy.

They want to help local businesses.

Present continuous tense.

The researcher found new data to bolster the hypothesis.

The data made the theory stronger.

Academic context.

The city bolstered its security for the festival.

They added more police for the event.

Past simple.

Lowering prices can bolster sales during the holidays.

Cheap prices help sell more things.

Gerund 'Lowering' as subject.

The bridge was bolstered with steel beams last year.

The bridge was made strong with metal.

Passive voice: 'was bolstered'.

Her experience in marketing will bolster the team.

Her skills will help the group.

Future with 'will'.

They organized a fundraiser to bolster the school's budget.

They raised money to help the school.

Infinitive of purpose.

The witness's testimony bolstered the defendant's story.

What the person said helped the other person.

Legal context.

We should bolster our defenses against cyber attacks.

We need to protect our computers better.

Modal verb 'should'.

The report includes several charts to bolster the main argument.

The charts provide evidence for the argument.

Transitive verb with abstract object.

The company's stock price was bolstered by the positive earnings report.

The stock went up because the company made money.

Passive voice with agent 'by...'.

The UN sent troops to bolster the peacekeeping mission.

They sent more soldiers to help keep peace.

Military/Political context.

She decided to get a Master's degree to bolster her career prospects.

She wanted to improve her chances of getting a good job.

Infinitive phrase.

The community garden was bolstered by a grant from the city.

The garden got stronger because of city money.

Passive voice.

His reputation was bolstered when he saved the child from the fire.

People liked him more after he was a hero.

Abstract object: 'reputation'.

The manager's open-door policy helped bolster employee morale.

Talking to the boss made the workers happier.

Psychological/Workplace context.

The new law is intended to bolster consumer protection.

The law is meant to keep shoppers safe.

Passive 'is intended' + infinitive.

The government's fiscal policy is designed to bolster domestic demand.

The policy aims to make people spend more money at home.

Economic terminology.

The findings from the longitudinal study bolster the case for early intervention.

The long study proves that helping early is good.

Academic 'bolster the case' idiom.

The architect suggested adding pillars to bolster the structural integrity of the wing.

Adding pillars makes that part of the building safe.

Physical architectural context.

The CEO's charismatic presence helped bolster investor confidence during the crisis.

The leader made the investors feel safe about their money.

Business context with abstract object.

He sought to bolster his argument by citing several obscure but relevant historical texts.

He tried to make his point stronger using old books.

Sophisticated 'sought to bolster' structure.

The addition of three veteran players significantly bolstered the team's defensive line.

The new players made the defense much stronger.

Adverb 'significantly' modifying the verb.

The treaty was bolstered by a series of bilateral trade agreements.

The main agreement was made stronger by smaller trade deals.

Diplomatic context.

The therapist worked with the patient to bolster their coping mechanisms.

The doctor helped the person find ways to handle stress.

Psychological context.

The sheer weight of empirical evidence serves to bolster the prevailing scientific consensus.

All the facts strongly support what scientists already think.

Complex subject 'sheer weight of evidence'.

The regime attempted to bolster its legitimacy by staging a series of highly publicized reforms.

The government tried to look real and fair by making some changes.

Political science context.

The author uses intricate metaphors to bolster the underlying theme of existential dread.

The metaphors make the main idea of the book stronger.

Literary analysis context.

In an effort to bolster the sagging economy, the central bank implemented quantitative easing.

To help the failing economy, the bank printed more money.

Advanced economic terminology.

The defense's strategy was to bolster the credibility of the key witness through character testimony.

The lawyers tried to make the witness look honest using other people.

Legal strategy context.

Her resolve was bolstered by the unwavering support of her colleagues.

She became more determined because her co-workers helped her.

Passive voice with abstract subject 'resolve'.

The infrastructure bill aims to bolster the nation's transportation networks for the next century.

The law wants to make roads and trains better for 100 years.

Long-term strategic context.

The philosophical framework is bolstered by a rigorous adherence to logical principles.

The ideas are strong because they follow strict logic.

Abstract philosophical context.

Synonyms

strengthen reinforce buttress shore up fortify uphold

Antonyms

undermine weaken diminish

Common Collocations

bolster confidence

bolster an argument

bolster the economy

bolster defenses

bolster a reputation

bolster morale

bolster support

bolster a claim

bolster the case

bolster structural integrity

Common Phrases

bolster up

— A phrasal version of bolster, often used informally to mean giving extra support.

They had to bolster up the old barn.

bolster the ranks

— To add more people to a group or organization.

New recruits were brought in to bolster the ranks.

bolster one's image

— To improve how people perceive you or your brand.

The star hired a publicist to bolster her image.

bolster the bottom line

— To increase the profits of a company.

The new product helped bolster the bottom line.

bolster a theory

— To provide more scientific or logical proof for an idea.

The experiment results bolster the theory of relativity.

bolster security

— To make a place or a digital system safer.

The airport decided to bolster security during the holidays.

bolster a position

— To make one's opinion or status more secure.

She wrote an editorial to bolster her position on the issue.

bolster the case for

— To provide reasons why something should happen.

The rising temperatures bolster the case for environmental action.

bolster someone's spirits

— To make someone feel happier or more hopeful.

A visit from her grandchildren bolstered her spirits.

bolster a defense

— To make a legal or physical defense stronger.

They hired a top lawyer to bolster their defense.

Often Confused With

bolster vs boast

Boast means to brag. Bolster means to support.

bolster vs buster

Buster is often used in 'blockbuster' or as a slang term for a person.

bolster vs bluster

Bluster means to speak loudly or aggressively with little effect.

Idioms & Expressions

"shore up the foundations"

— To strengthen the basic parts of something to prevent it from failing.

We need to shore up the foundations of our marriage.

metaphorical

"add fuel to the fire"

— While bolster is positive support, this idiom means to make a bad situation worse.

His comments only added fuel to the fire.

informal

"prop up a straw man"

— To support a weak argument just to knock it down later.

He's just propping up a straw man to win the debate.

rhetorical

"gird one's loins"

— To prepare oneself for a struggle, similar to bolstering one's courage.

Gird your loins for the coming battle.

literary

"armored to the teeth"

— Extremely well bolstered or protected.

The fortress was armored to the teeth.

idiomatic

"stiffen one's resolve"

— To make oneself more determined, a synonym for bolstering resolve.

The criticism only served to stiffen his resolve.

formal

"hold the fort"

— To maintain a position while waiting for reinforcements or bolstering support.

Can you hold the fort while I'm away?

informal

"beef up"

— Informal version of bolster, meaning to make something more substantial.

We need to beef up our security.

slang/informal

"put some muscle behind"

— To use power or influence to bolster a project.

The CEO put some muscle behind the new initiative.

business informal

"back someone to the hilt"

— To provide maximum support to someone.

The party backed him to the hilt.

idiomatic

Easily Confused

bolster vs buttress

Both mean to support and have architectural origins.

Buttress is more formal and usually refers to physical walls or very heavy logical structures. Bolster is more versatile and used for emotions/morale.

The cathedral walls are buttressed; the team's morale was bolstered.

bolster vs reinforce

Both involve making something stronger.

Reinforce often means adding more of the same (more troops, more steel). Bolster means providing a prop or foundation.

Reinforce the army; bolster the argument.

bolster vs fortify

Both mean to strengthen.

Fortify usually implies protection against an outside attack or adding nutrients to food.

Fortify the castle; bolster the economy.

bolster vs underpin

Both deal with support.

Underpin refers to the foundation or basic logic underneath. Bolster refers to support added to the structure.

Logic underpins the theory; evidence bolsters the theory.

bolster vs augment

Both involve adding something.

Augment focuses on increasing size, value, or amount. Bolster focuses on increasing strength or stability.

Augment your salary; bolster your defense.

Sentence Patterns

I want to bolster my [noun].

I want to bolster my English.

[Noun] bolsters [noun].

This news bolsters our hope.

[Noun] was bolstered by [noun].

The economy was bolstered by tourism.

To bolster [noun], [subject] [verb].

To bolster his claim, the scientist ran more tests.

The [noun] serves to bolster [noun].

The evidence serves to bolster the prosecution's case.

[Noun] is bolstered by a rigorous [noun].

The theory is bolstered by a rigorous adherence to logic.

In an effort to bolster [noun], [subject] [verb].

In an effort to bolster the sagging market, the bank cut rates.

With a bolstered [noun], [subject] [verb].

With a bolstered sense of purpose, she began her journey.

Word Family

Nouns

Verbs

Adjectives

How to Use It

frequency

Common in written news, academic journals, and professional speech.

Common Mistakes

Using 'bolster' when you mean 'boast'. → He boasted about his high score.
Boast means to talk with excessive pride. Bolster means to support. They sound similar but are very different.
Saying 'The problem bolstered' (intransitive). → The problem was bolstered by poor management.
Bolster is transitive; it must have an object. It cannot happen by itself.
Using 'bolster' for negative things like 'bolstering a disease'. → The lack of hygiene exacerbated the disease.
Bolster has a constructive, positive connotation. For making bad things worse, use 'exacerbate' or 'aggravate'.
Confusing 'bolster' with 'bluster'. → The politician's bluster didn't fool anyone.
Bluster is loud, empty talk. Bolster is real, structural support.
Spelling it as 'boulster'. → bolster
There is no 'u' in the standard spelling of bolster.

Tips

Use it for Morale

Whenever you want to say you made someone feel more confident, use 'bolster.' It sounds much more professional than 'made them feel better.' For example: 'The manager's praise bolstered her confidence.'

Pair with Evidence

In essays, 'bolster' is the perfect verb to link your evidence to your claims. Try this: 'This statistical data bolsters the argument that...'

Business Context

In a job interview, talk about how you 'bolstered' a previous company's performance or team spirit. It shows you are a proactive and constructive worker.

Watch the Object

Remember that 'bolster' needs an object. You can't just 'bolster.' You have to bolster *something*. Always check that your sentence has a clear target for the support.

Variety is Key

While 'bolster' is great, don't use it three times in one paragraph. Rotate it with 'reinforce,' 'fortify,' or 'strengthen' to keep your writing fresh.

News Keywords

When listening to financial news, 'bolster' is often a signal that something positive is happening to a currency or a stock. It's a keyword for market stability.

The Pillow Link

If you forget the meaning, remember the long pillow. A pillow supports your head; the verb 'bolster' supports an idea. It's all about providing a prop.

Synthesize Sources

Use 'bolster' when one author's work supports another's. Example: 'Smith's findings bolster the earlier research conducted by Jones.'

Project Management

In project reports, use 'bolster' to describe adding resources. 'We bolstered the project team with two additional consultants to meet the deadline.'

Context Clues

If you see 'bolster' in a sentence about a building, think 'physical support.' If it's about a person, think 'emotional support.' If it's about a country, think 'economic or military support.'

Memorize It

Mnemonic

Think of a 'B-O-L-T' (bolt) being used to 'bolster' a piece of furniture. A bolt makes it strong; bolstering makes it strong.

Visual Association

Imagine a long, firm pillow (a bolster) tucked under a sagging mattress to keep it level. That pillow is 'bolstering' the bed.

Word Web

Support Strengthen Reinforce Pillow Confidence Economy Argument Foundation

Challenge

Write three sentences: one about bolstering a building, one about bolstering a friend, and one about bolstering an economy.

Word Origin

Derived from the Old English word 'bolster,' which referred to a sleeping pad or cushion. It has Germanic roots, related to the Old High German 'bolstar.'

Original meaning: A long, thick pillow that is placed under other pillows for support.

Germanic

Cultural Context

Generally a positive and neutral word. No specific cultural sensitivities.

Common in headlines to describe government actions or market trends.

Used frequently in 'The Economist' to describe fiscal policies. Often appears in legal thrillers like those by John Grisham. Commonly heard in sports commentary during the 'transfer window' in the Premier League.

Practice in Real Life

Real-World Contexts

Business/Finance

bolster the bottom line
bolster investor confidence
bolster market share
bolster financial reserves

Academic Writing

bolster a claim
bolster the hypothesis
bolster the argument
bolster the case for

Physical Construction

bolster the foundation
bolster the structure
bolster with steel
bolster the wall

Sports

bolster the squad
bolster the defense
bolster the bench
bolster the lineup

Personal/Emotional

bolster morale
bolster confidence
bolster spirits
bolster resolve

Conversation Starters

"What are some ways a company can bolster its reputation after a public mistake?"

"How do you bolster your own confidence before a big presentation or exam?"

"Do you think governments should do more to bolster small businesses during a crisis?"

"What kind of evidence do you find most effective to bolster a difficult argument?"

"If you were a coach, how would you bolster your team's spirits after a tough loss?"

Journal Prompts

Describe a time when someone helped bolster your confidence. What did they say or do?

Write about a project you are working on. How could you bolster its chances of success?

Reflect on a global issue. What measures could be taken to bolster international cooperation?

Think of a skill you want to improve. What resources can you use to bolster your learning?

Discuss the importance of bolstering the physical infrastructure in your home city.

Frequently Asked Questions

10 questions

Yes, but usually in terms of their spirits, confidence, or morale. You wouldn't typically 'bolster a person' physically unless you are using a pillow to prop them up in bed. In a professional context, you might 'bolster a team' by adding more members.

Generally, yes. It implies making something more effective or stable. However, if you are 'bolstering a bad idea,' it could be seen as negative from the perspective of someone who dislikes that idea. But the act of bolstering itself is a constructive one for the object being bolstered.

'Support' is a very broad, common word. 'Bolster' is more specific and formal. Bolstering implies that there is a specific need for reinforcement or that the object might fail without the added support. It's a 'stronger' word than 'support.'

Yes, 'bolster up' is a common phrasal verb, especially in British English. However, in formal American English and academic writing, the 'up' is often considered redundant and is usually omitted.

Absolutely. It is a very common academic word used to describe how data or experiments provide support for a hypothesis or theory. It is highly recommended for C1/C2 level writing.

The noun form is also 'bolster.' It refers to a long, narrow pillow or cushion. It can also refer to a structural part in a vehicle or a tool used in masonry.

Not exactly. While bolstering something might lead to an increase (like bolstering sales), the core meaning is to strengthen or support. You can bolster a wall without increasing its size, just by making it more solid.

It rhymes with 'pole,' 'bowl,' and 'hole.' It uses a long 'o' sound. Do not pronounce it like 'ball.'

It is common in professional and academic settings. You might not hear it every day in casual street slang, but you will see it daily in high-quality newspapers and books.

Yes, the past participle 'bolstered' is often used as an adjective to describe something that has received support. For example: 'The bolstered defenses held firm.'