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A1 noun #4,188 most common 13 min read

century

Top 4,188

Practice it Examples Notes & Tips century in 30 Seconds

Explanation century in your Level:

At the A1 level, you only need to know that a century is a very long time, specifically 100 years. You will mostly hear this word when people talk about history or very old things. For example, 'The 21st century started in 2001.' It is a basic counting word for time, just like 'day', 'week', 'month', and 'year'. You might see it on signs for old buildings that say '19th Century House'. Remember that 100 years = 1 century. It is a noun, so you can say 'one century' or 'two centuries'. Don't worry about the complicated history yet; just remember the number 100. If something is a century old, it is very old to us! You can use it in simple sentences like 'My grandfather is almost a century old' if he is nearly 100. It's a useful word for talking about the past and the future in a simple way.

At the A2 level, you should start using century to describe historical periods and durations. You should be able to say which century we are in now (the 21st century) and talk about the past. For example, 'In the 20th century, people started using cars.' You will also notice that we use 'the' before the number, like 'the 18th century'. This level also introduces the plural form 'centuries'. You might say, 'This castle is many centuries old.' You should also understand phrases like 'half a century' (50 years). It's common to see this word in reading passages about famous people from the past. You should practice saying the ordinal numbers correctly with it: first, second, third, fourth... up to twenty-first. It's a key word for basic storytelling about history and family lineage.

At the B1 level, you can use century in more complex sentences and understand its role in different contexts. You should be comfortable using it as an adjective with a hyphen, such as 'a 19th-century painting'. You will also encounter the phrase 'the turn of the century', which refers to the time when one century ends and another begins. At this level, you can discuss social changes over a century. For example, 'The roles of women changed significantly during the 20th century.' You might also hear it in sports, like cricket, where a 'century' means scoring 100 runs. You should understand that a century isn't just a number, but a way to group historical events. You can use it to compare different times: 'Life in this century is much faster than in previous centuries.' It helps you organize your thoughts when writing essays about history or society.

At the B2 level, you should have a firm grasp of the 'N+1' rule for centuries—knowing that the 1800s are the 19th century and the 1900s are the 20th century. You will use the word century to analyze trends, scientific progress, and cultural movements. You might talk about 'mid-century modern' architecture or the 'American Century'. You should be able to use the word in academic contexts, such as 'The 17th century was a pivotal era for modern science.' You will also understand more figurative uses, like 'This discovery is the greatest of the century.' Your vocabulary should include related words like 'centenary' (the 100th anniversary) and you should know the difference between them. You can use 'century' to provide scale in arguments, such as 'We have seen more change in the last quarter-century than in the previous two centuries combined.' It becomes a tool for sophisticated temporal analysis.

At the C1 level, your use of century should be precise and nuanced. You will understand how the term is used to construct historical narratives and how 'centuries' are often used as shorthand for specific sets of values or styles (e.g., '18th-century rationalism'). you should be aware of the 'long century' and 'short century' concepts used by historians (like Hobsbawm's 'long 19th century' from 1789 to 1914). You will use the word in complex grammatical structures, such as 'Had it not been for the advancements of the late 19th century, modern medicine would be unrecognizable.' You can also use it in more idiomatic or literary ways, discussing the 'sweep of centuries' or 'the weight of the century'. You should be able to distinguish between 'century' and its synonyms like 'epoch' or 'era' based on the specific connotations required by your text. Your writing should show a clear understanding of the cultural and geopolitical implications of how we divide time into centuries.

At the C2 level, you use century with total mastery, often exploring its philosophical and historiographical dimensions. You might critique the Eurocentric nature of the Gregorian century system or discuss how the concept of a century varies across different cultures and calendars. You can use the word to discuss deep time, contrasting human 'centuries' with geological 'eons'. Your language will include sophisticated collocations and metaphors, such as 'the century's dying embers' or 'a century-long struggle for hegemony'. You will be able to handle complex plural and possessive forms effortlessly in dense academic or literary prose. At this level, 'century' is not just a unit of time, but a flexible concept that you can manipulate to frame arguments about continuity, rupture, and the human perception of history. You understand that the 'century' is a social construct that shapes how we perceive our collective past and future.

Practice it Examples Notes & Tips

century in 30 Seconds

A century is a time span of 100 years, used globally to organize history.
The term comes from the Latin word 'centum', which means one hundred.
In sports like cricket, a century refers to a player scoring 100 runs.
We are currently in the 21st century, which ends in the year 2100.

The term century is a fundamental unit of time measurement in the Gregorian calendar, representing a span of exactly one hundred years. While its mathematical definition is rigid, its usage in language is incredibly versatile, spanning historical discourse, scientific projections, sporting achievements, and everyday conversation about the passage of time. When we speak of a century, we are often grouping human experiences into manageable blocks that allow us to compare different eras of progress, conflict, and cultural evolution. For instance, the transition from the 19th century to the 20th century is not just a change in digits but represents the shift from the Victorian era into the age of industrialization and world wars.

The Mathematical Core: A century consists of 100 consecutive years. In the standard calendar system, the 1st century AD began with the year 1 and ended with the year 100. This logic continues today, where the 21st century began on January 1, 2001, and will conclude on December 31, 2100.

The invention of the printing press in the 15th century completely transformed how information was shared across Europe.

In a broader cultural context, the word is used to describe a long time in a figurative sense. If someone says, "It has been a century since I last saw you," they are using hyperbole to emphasize a long duration, even if only a few years have passed. In the world of sports, particularly cricket, a century refers to a batsman scoring 100 runs in a single innings, which is considered a significant milestone of skill and endurance. Similarly, in cycling, a 'century ride' is a bicycle ride of 100 miles (161 km) or more within a single day. These varied applications show that while the core meaning is 'one hundred', the context dictates whether we are talking about history, sports, or personal patience.

Historical Categorization: Historians use centuries to categorize major movements, such as the 'Century of Lights' (the Enlightenment) or the 'American Century' (referring to the 20th century's geopolitical dominance by the United States).

Many buildings in this old European city have stood for over a century, surviving multiple wars and natural disasters.

The word also appears in specialized fields like architecture. 'Mid-century modern' is a design movement in interior, product, graphic design, architecture, and urban development from roughly 1933 to 1965. Here, 'century' is used to pinpoint a specific aesthetic era that remains popular in contemporary home styling. Furthermore, the term 'turn of the century' is frequently used to describe the period transitioning from one hundred-year block to the next, specifically the years immediately preceding and following the change, such as 1895–1905.

At the turn of the century, people were worried about the Y2K bug affecting global computer systems.

Societal Impact: We often measure the progress of human rights, technology, and medicine by looking at what was achieved in a single century, highlighting the acceleration of change in the modern world.

The 20th century saw more technological advancement than all previous centuries combined.

Climate change is expected to be the defining challenge of the 21st century.

Ultimately, 'century' is more than just a number; it is a lens through which we view history and our place within the timeline of the universe. It provides a sense of scale that is larger than a human life but still comprehensible to the human mind.

Using the word century correctly involves understanding its role as a noun and its frequent function as a compound adjective. In its simplest form, it names a period of time. However, when it modifies another noun, it often requires a hyphen. For example, 'a 19th-century novel' uses the hyphen because '19th-century' is acting as a single adjective describing the novel. If you simply say, 'The novel was written in the 19th century,' no hyphen is needed because 'century' is the object of the prepositional phrase.

As a Subject or Object: 'The last century was marked by incredible scientific discovery.' Here, 'century' is the subject of the sentence, acting as the main focus of the statement.

We are currently living in the twenty-first century.

When discussing duration, 'century' is often used with 'for' or 'over'. Phrases like 'for over a century' or 'for nearly a century' indicate that something has persisted for a very long time. This is common in descriptions of family businesses, architectural landmarks, or long-standing traditions. It conveys a sense of stability and historical depth. Conversely, 'within a century' suggests a deadline or a timeframe in which a major change is expected to occur, often used in scientific or economic forecasting.

Prepositional Usage: 'At the turn of the century' is a fixed idiom. 'Throughout the century' implies that something happened continuously during those 100 years.

The family has owned this vineyard for more than a century.

In plural form, 'centuries' is used to describe vast stretches of time. 'For centuries, people believed the earth was the center of the universe.' This usage emphasizes the longevity of an idea or a state of being. It is also used to compare different hundred-year blocks: 'The 18th and 19th centuries were periods of great colonial expansion.' When using the plural, ensure the verb agreement is correct (e.g., 'Centuries have passed' rather than 'Centuries has passed').

It took centuries for the Roman Empire to slowly decline and fall.

Comparative Use: 'This century's challenges are different from those of the last.' Using the possessive ('century's') is a common way to attribute specific qualities or problems to a particular time period.

The century's end was celebrated with massive fireworks displays around the globe.

Half a century ago, the internet did not even exist for the general public.

Finally, the word is often paired with 'quarter' or 'half'. 'A quarter-century' is 25 years, and 'half a century' is 50 years. These fractions allow for more granular discussions of time while still using the 'century' as the primary reference point. For example, 'The company celebrated its half-century anniversary last year,' sounds more prestigious than simply saying '50th anniversary'.

The word century is ubiquitous in educational and professional settings, but it also appears frequently in media and sports. In a history classroom, you will hear it every few minutes as the teacher outlines the progression of events. 'In the 18th century, the Industrial Revolution began in Britain.' Here, it serves as a chronological anchor, helping students visualize where events sit on a timeline that stretches back thousands of years.

News and Media: Journalists use 'century' to provide context for current events. A news report might state, 'This is the worst drought in a century,' to emphasize the severity and rarity of the weather pattern.

The documentary explored the social changes of the mid-20th century.

In the world of sports, specifically cricket, the word takes on a very specific meaning. When a commentator shouts, 'He's reached his century!', they are announcing that a player has scored 100 runs. This is one of the most celebrated achievements in the sport. You might also hear 'double century' (200 runs) or 'triple century' (300 runs). In this context, 'century' is a synonym for 100 points or units, highlighting the word's numerical root. Similarly, in cycling, reaching a 'century' means you've completed a 100-mile ride, a badge of honor for amateur and professional cyclists alike.

Scientific Projections: Climate scientists often talk about 'end-of-century' projections, referring to what the global temperature or sea levels will be like in the year 2100.

The player raised his bat to the crowd after scoring a magnificent century.

In literature and art history, 'century' is used to define styles. You might hear a museum guide talk about '17th-century Dutch masters' or a literature professor discuss '19th-century Romanticism'. These labels help categorize vast amounts of creative work into understandable periods. Even in casual conversation, if someone is describing a very old-fashioned person, they might jokingly say, 'He belongs in the 19th century,' suggesting the person's ideas or manners are 100 years out of date.

This antique desk dates back to the early 18th century and is made of solid oak.

Business and Longevity: Companies often use the word to boast about their history. 'Serving customers for over a century' is a powerful marketing tool that implies reliability, quality, and survival through changing times.

The city is planning a massive celebration for its century anniversary next month.

Scientists are working to ensure that the earth remains habitable for the next century.

From the grand scale of human history to the specific achievement of a single athlete, 'century' is a word that helps us quantify the passage of time and the magnitude of our efforts. It is a word of both measurement and milestone.

The most common mistake people make with the word century is a mathematical one: misidentifying which years belong to which century. Because there was no 'Year 0' in the Gregorian calendar, the 1st century began with Year 1 and ended with Year 100. Consequently, the 20th century refers to the years 1901 through 2000, not 1900 through 1999. Many people mistakenly think that any year starting with '19' is the 19th century, when it is actually the 20th.

The 'N-1' Rule: To find the correct century, look at the first two digits of the year and add one. For 1850, 18 + 1 = 19th century. For 2024, 20 + 1 = 21st century. This simple rule prevents the most frequent error in historical discussion.

Incorrect: Queen Victoria died in the 19th century (1901). Correct: She died at the very start of the 20th century.

Another common error is related to hyphenation. As mentioned in the usage section, 'century' needs a hyphen when it acts as part of a compound adjective before a noun. Writing 'a 20th century invention' without a hyphen is technically incorrect in formal English; it should be 'a 20th-century invention'. However, if you write 'the invention was from the 20th century', adding a hyphen there would be a mistake because the phrase is not modifying a following noun.

Pluralization Pitfalls: When talking about multiple centuries, some learners forget to change the noun to 'centuries'. For example, saying 'It took three century to build' is incorrect. It must be 'three centuries'.

Incorrect: The building is several century old. Correct: The building is several centuries old.

There is also a stylistic mistake regarding the use of 'the'. In English, we almost always use the definite article 'the' before a specific century. Saying 'I am studying 19th century' sounds unnatural. It should be 'I am studying the 19th century.' The only exception is when 'century' is used in a general sense, such as 'Century after century, the river flowed,' but even then, it is rare.

Incorrect: We live in 21st century. Correct: We live in the 21st century.

Confusing 'Century' with 'Centenary': A 'century' is a period of 100 years. A 'centenary' (or centennial) is the 100th anniversary of a specific event. You live through a century, but you celebrate a centenary.

The museum is holding an exhibition for the centenary of the artist's birth, not for a century of his birth.

Incorrect: There is much century in history. Correct: There are many centuries in history.

By paying attention to these chronological, grammatical, and lexical nuances, you can use 'century' with precision and avoid the common traps that even native speakers sometimes fall into.

While century specifically means 100 years, there are several other words used to describe periods of time that might be more appropriate depending on the context. Understanding the differences between these terms will help you choose the most precise word for your writing or speech. The most common alternatives relate to different lengths of time or different ways of categorizing history.

Decade vs. Century: A decade is a period of 10 years. If you are talking about recent trends, such as the rise of social media in the 2010s, 'decade' is the correct term. 'Century' would be too broad for such a specific, short-term change.

While a decade is enough to see a change in fashion, it takes a century to see a change in a language's structure.

On the larger end of the scale, we have 'millennium', which refers to a period of 1,000 years. This is used for very long-term historical or geological discussions. For example, 'The transition from the second to the third millennium was a global event.' If 'century' feels too small for the scope of your topic, 'millennium' might be the word you need. Between these mathematical terms, we find words like 'era', 'epoch', and 'age', which categorize time based on characteristics rather than a fixed number of years.

Era vs. Century: Use 'century' when you want to be mathematically precise about 100 years. Use 'era' when you want to describe a period defined by a specific person, event, or quality, like the 'Space Era'.

The Elizabethan era occurred during the 16th century.

In a more figurative sense, you might use 'age' to denote a long time. Phrases like 'I haven't seen you for ages' are common in British English. In American English, people might say 'I haven't seen you in forever.' Both are informal ways to express a duration that feels like a century but isn't. In scientific contexts, particularly geology, 'epoch' and 'period' have very specific meanings that relate to layers of the earth and biological changes, often spanning millions of years.

We are currently living in the Holocene epoch, which has lasted much longer than a few centuries.

Centennial / Centenary: As mentioned before, these words refer to the 100th anniversary. 'The city is planning its centennial celebration' refers to the one-day or one-year event marking 100 years since its founding.

The centennial of the university attracted thousands of alumni.

The period of the Renaissance spanned across several centuries.

Choosing the right word depends on whether you are prioritizing numerical accuracy (century, decade, millennium) or the character of the time period (era, age, epoch). In most general contexts, 'century' remains the most common and useful way to describe 100-year blocks of human history.

How Formal Is It?

Fun Fact

The 'century' in Roman times actually consisted of 80 soldiers, not 100, despite the name!

Pronunciation Guide

UK /ˈsentʃəri/

US /ˈsentʃəri/

The stress is on the first syllable: SEN-tury.

Rhymes With

Elementary (partial) Sanctuary (partial) Ventry Gentry Sentry Entry Plenary (partial) Inventory (partial)

Common Errors

Pronouncing it as 'sen-tury' without the 'ch' sound.
Adding an extra syllable: 'sen-tu-a-ry' (confusing it with sanctuary).
Stress on the second syllable.
Swapping the 'n' and 't' sounds.
Pronouncing the 'y' as a short 'i'.

Difficulty Rating

Reading 1/5

Very easy to recognize in text.

Writing 2/5

Requires correct ordinal numbers and hyphenation.

Speaking 2/5

Pronunciation of 'ch' sound can be tricky for some.

Listening 1/5

Distinct sound, easy to hear in context.

What to Learn Next

Prerequisites

year hundred time history past

Learn Next

decade millennium era period ancient

Advanced

historiography periodization centenary centurion epoch

Grammar to Know

Ordinal Numbers

We use 1st, 2nd, 3rd with century.

Hyphenation in Adjectives

A 19th-century artist (adjective) vs. In the 19th century (noun).

The Definite Article

Always say 'the' 21st century.

Plural Formation

One century, two centuries (change y to i and add es).

Prepositional Phrases

Use 'in' for time periods: In the 20th century.

Examples by Level

A century is 100 years.

Un siècle, c'est 100 ans.

Use 'a' before 'century'.

We live in the 21st century.

Nous vivons au 21ème siècle.

Always use 'the' with specific centuries.

This book is a century old.

Ce livre a un siècle.

'Old' comes after the time period.

The 20th century ended in 2000.

Le 20ème siècle s'est terminé en 2000.

Past tense 'ended'.

My house was built last century.

Ma maison a été construite au siècle dernier.

'Last century' usually means the 1900s now.

Is a century a long time?

Est-ce qu'un siècle est une longue période ?

Question form with 'is'.

He lived for nearly a century.

Il a vécu pendant presque un siècle.

'Nearly' means almost 100.

I like 19th century stories.

J'aime les histoires du 19ème siècle.

Ordinal number '19th'.

The castle has stood for many centuries.

Le château est là depuis plusieurs siècles.

Plural 'centuries'.

In the last century, everything changed.

Au siècle dernier, tout a changé.

Comma after the introductory phrase.

She was born at the turn of the century.

Elle est née au tournant du siècle.

Idiom: 'turn of the century'.

Half a century ago, there were no cell phones.

Il y a un demi-siècle, il n'y avait pas de téléphones portables.

'Half a century' = 50 years.

This tradition is over a century old.

Cette tradition a plus d'un siècle.

'Over' means more than.

The museum has many 18th-century chairs.

Le musée possède de nombreuses chaises du 18ème siècle.

Hyphenated adjective '18th-century'.

Which century was the French Revolution in?

Dans quel siècle a eu lieu la Révolution française ?

Question with 'which'.

The 21st century brings new technology.

Le 21ème siècle apporte de nouvelles technologies.

Present simple for general facts.

The city celebrated its first century of existence.

La ville a célébré son premier siècle d'existence.

Possessive 'its'.

Many 19th-century novels are still popular today.

De nombreux romans du 19ème siècle sont encore populaires aujourd'hui.

Hyphenated compound adjective.

The batsman scored a brilliant century in the final.

Le batteur a marqué un brillant siècle (100 runs) lors de la finale.

Sporting context (cricket).

Throughout the century, the climate has warmed.

Tout au long du siècle, le climat s'est réchauffé.

'Throughout' means during the whole time.

It took nearly a quarter-century to finish the project.

Il a fallu près d'un quart de siècle pour terminer le projet.

'Quarter-century' = 25 years.

The artist's work defined the mid-20th century.

L'œuvre de l'artiste a défini le milieu du 20ème siècle.

'Mid-' prefix for the middle period.

Centuries of war have left their mark on this land.

Des siècles de guerre ont laissé leur trace sur cette terre.

Plural subject with plural verb 'have'.

We are facing the biggest crisis of the century.

Nous sommes confrontés à la plus grande crise du siècle.

Superlative 'biggest'.

The 17th century was a time of great scientific discovery.

Le 17ème siècle fut une époque de grandes découvertes scientifiques.

Describing a period's character.

His family has lived in this village for over a century.

Sa famille vit dans ce village depuis plus d'un siècle.

Present perfect for duration.

The building's design is typical of early 20th-century architecture.

La conception du bâtiment est typique de l'architecture du début du 20ème siècle.

Using 'early' to specify the time.

By the end of the century, the population will have doubled.

D'ici la fin du siècle, la population aura doublé.

Future perfect 'will have doubled'.

The novel captures the spirit of the 19th century perfectly.

Le roman capture parfaitement l'esprit du 19ème siècle.

'Spirit of' is a common collocation.

A quarter-century of research led to this breakthrough.

Un quart de siècle de recherche a conduit à cette percée.

Subject is 'quarter-century'.

The company survived for a century through innovation.

L'entreprise a survécu pendant un siècle grâce à l'innovation.

Preposition 'through' for method.

The 18th century saw the rise of the Enlightenment.

Le 18ème siècle a vu l'essor des Lumières.

The century is the personified subject.

The 'long 19th century' is a term used by many historians.

Le 'long 19ème siècle' est un terme utilisé par de nombreux historiens.

Academic historical terminology.

Their influence spanned more than a century of political life.

Leur influence a couvert plus d'un siècle de vie politique.

'Spanned' indicates coverage.

Mid-century modern furniture has seen a massive resurgence in popularity.

Le mobilier moderne du milieu du siècle a connu un regain de popularité massif.

Specific design terminology.

The project was a century in the making, involving generations of architects.

Le projet a mis un siècle à se concrétiser, impliquant des générations d'architectes.

Idiom: 'in the making'.

Centuries-old trees were cut down to make room for the highway.

Des arbres centenaires ont été abattus pour faire de la place à l'autoroute.

Compound adjective 'centuries-old'.

The 20th century was defined by the struggle between democracy and totalitarianism.

Le 20ème siècle a été défini par la lutte entre la démocratie et le totalitarisme.

Passive voice 'was defined by'.

We must look back across the centuries to understand our current laws.

Nous devons regarder en arrière à travers les siècles pour comprendre nos lois actuelles.

Metaphorical 'looking back'.

The turn of the century brought with it a sense of both hope and anxiety.

Le tournant du siècle a apporté avec lui un sentiment d'espoir et d'anxiété.

Abstract nouns as objects.

The historiography of the 19th century has undergone significant revision.

L'historiographie du 19ème siècle a subi une révision importante.

Formal academic vocabulary.

One cannot ignore the century-long legacy of colonialism in this region.

On ne peut ignorer l'héritage séculaire du colonialisme dans cette région.

Adjective 'century-long'.

The poem reflects the existential dread of the mid-20th century.

Le poème reflète l'angoisse existentielle du milieu du 20ème siècle.

Literary analysis.

The acceleration of time in the digital age makes a century feel like an eternity.

L'accélération du temps à l'ère numérique donne l'impression qu'un siècle est une éternité.

Philosophical comparison.

Few institutions can boast a continuous history of over five centuries.

Peu d'institutions peuvent se targuer d'une histoire continue de plus de cinq siècles.

Formal verb 'boast'.

The 21st century's geopolitical landscape is increasingly multipolar.

Le paysage géopolitique du 21ème siècle est de plus en plus multipolaire.

Possessive 'century's'.

He spoke of the 'century of the common man' with great fervor.

Il a parlé du 'siècle de l'homme ordinaire' avec une grande ferveur.

Quoted historical phrase.

The artifacts provide a window into 14th-century daily life.

Les artefacts offrent une fenêtre sur la vie quotidienne du 14ème siècle.

Metaphorical 'window into'.

Synonyms

hundred years centenary era age epoch

Antonyms

decade millennium

Common Collocations

21st century

turn of the century

half a century

quarter-century

last century

mid-century modern

over a century

scored a century

early 19th century

for centuries

Common Phrases

Turn of the century

— The period when one century ends and another begins.

The novel is set at the turn of the century.

A century of progress

— Describing a 100-year period filled with advancement.

The exhibit showcases a century of progress in medicine.

Half a century

— Fifty years.

They have been married for half a century.

Quarter-century

— Twenty-five years.

He has spent a quarter-century in the military.

Last century

— The previous 100-year block (usually the 1900s).

My grandmother was born last century.

In a century

— Within the next 100 years or after 100 years.

The forest will regrow in a century.

For centuries

— For a very long time spanning several hundred years.

This wall has stood for centuries.

Mid-century

— The middle part of a century (years 40-60).

The style is very mid-century.

Next century

— The 100-year block following the current one.

What will life be like in the next century?

Worst in a century

— The most extreme event in the last 100 years.

This was the worst storm in a century.

Often Confused With

century vs decade

A decade is 10 years, a century is 100 years.

century vs millennium

A millennium is 1,000 years, a century is 100 years.

century vs centenary

A century is a duration; a centenary is a single anniversary date.

Idioms & Expressions

"Not in a century"

— Never, or not for a very long time.

I haven't seen a movie that good in a century.

informal

"The sale of the century"

— An exceptionally good deal or a very important commercial event.

This clearance event is being called the sale of the century.

informal

"Fight of the century"

— A highly anticipated and important boxing match or conflict.

The two champions are preparing for the fight of the century.

neutral

"Crime of the century"

— A particularly famous or shocking criminal act.

The kidnapping was labeled the crime of the century.

neutral

"A century late"

— Being very far behind the current times or trends.

His fashion sense is a century late.

informal

"Turn of the century"

— The transition period between two centuries.

Life changed rapidly at the turn of the century.

neutral

"Once in a century"

— Extremely rare; happening only once every 100 years.

A solar eclipse like this is a once-in-a-century event.

neutral

"Score a century"

— To achieve 100 runs in cricket.

He was nervous before scoring his first century.

neutral

"The American Century"

— A description of the 20th century as being dominated by the US.

Historians often discuss the legacy of the American Century.

academic

"Century of Humiliation"

— A term used in Chinese history to describe the period between 1839 and 1949.

The leader referenced the century of humiliation in his speech.

academic

Easily Confused

century vs Centenary

Both relate to 100.

Century is the 100-year period. Centenary is the 100th anniversary event.

The century was peaceful, but the centenary party was loud.

century vs Centennial

Similar sound and meaning.

Centennial is usually an adjective or the US term for centenary.

We had a centennial celebration for the century-old park.

century vs Sanctuary

Phonetically similar ending.

A sanctuary is a safe place; a century is a time.

The century-old church was a sanctuary for many.

century vs Sentry

Phonetically similar beginning.

A sentry is a guard; a century is a time.

The sentry stood at the gate for a century (hyperbole).

century vs Centurion

Etymologically related.

A centurion is a Roman officer; a century is a time.

The centurion lived in the first century.

Sentence Patterns

A century is [number] years.

A century is 100 years.

We live in the [ordinal] century.

We live in the 21st century.

It was built in the [ordinal] century.

It was built in the 12th century.

A [ordinal]-century [noun]

A 19th-century novel.

By the end of the century, [future clause].

By the end of the century, cars will fly.

For more than a century, [present perfect clause].

For more than a century, they have lived here.

The turn of the century brought [noun].

The turn of the century brought great change.

The [ordinal] century was characterized by [noun].

The 18th century was characterized by the Enlightenment.

Word Family

Nouns

century

centenary

centurion

centennial

bicentenary

Adjectives

centennial

century-long

mid-century

decade

millennium

hundred

percent

centigrade

How to Use It

frequency

Very common in academic, journalistic, and historical contexts.

Common Mistakes

19th century starts in 1900 → 19th century is 1801-1900
People often get the century number wrong by one. Remember the 1st century was years 1-100.
a 20th century book → a 20th-century book
Compound adjectives before a noun need a hyphen.
many century ago → many centuries ago
Always use the plural form 'centuries' after 'many' or other plural markers.
In 21st century → In the 21st century
Specific centuries require the definite article 'the'.
I haven't seen you for a centenary → I haven't seen you for a century
Centenary is an anniversary; century is a duration of time.

Tips

Hyphen Use

Use a hyphen for '19th-century literature' but not for 'in the 19th century'.

The N+1 Rule

To find the century, add 1 to the first two digits of the year (e.g., 1750 -> 17+1 = 18th century).

Anniversary vs Duration

Use 'centenary' for the party and 'century' for the 100-year span.

Natural Sounding

Always use 'the' before the century name (e.g., 'the 20th century').

Plural Spelling

Remember to change the 'y' to 'i' and add 'es' for 'centuries'.

Sports Meaning

If you hear 'century' on a sports channel, it likely means 100 runs or points.

Era vs Century

Centuries are exactly 100 years; eras can be any length of time.

Academic Style

Spell out centuries in full words for a more professional tone in essays.

Catch the ordinal

Listen for the '-th' sound at the end of the number before 'century'.

Style labels

'Mid-century' usually refers to the 1950s style.

Memorize It

Mnemonic

Think of a 'cent' (100 cents in a dollar). A 'century' is 100 years. Cent = 100.

Visual Association

Imagine a giant number '100' made of old clocks and calendars.

Word Web

100 years history cricket decade millennium era centurion centenary

Challenge

Try to name one major invention from every century from the 15th to the 21st.

Word Origin

The word 'century' comes from the Latin word 'centuria', which means a group of one hundred. This was originally used in the Roman army to describe a unit of 100 soldiers commanded by a centurion.

Original meaning: A collection of 100 things, particularly soldiers.

Indo-European (Latin branch).

Cultural Context

Be careful when discussing centuries in a global context, as some cultures may refer to different calendars (e.g., Islamic or Hebrew) where the century numbering differs.

In the UK, scoring a century in cricket is a mark of a great player. In the US, 'century' is often used in real estate to describe historic homes.

The 20th Century Fox movie studio. The 'Century' class of steam locomotives. The 'Century' bicycle ride.

Practice in Real Life

Real-World Contexts

History Class

In the 18th century
Historical period
Ancient centuries
Medieval century

Cricket Match

Scored a century
Double century
Reached his hundred
Century partnership

Architecture

Mid-century modern
Century home
19th-century design
Century-old building

Science

End-of-century projections
Century-long study
Last quarter-century
Within a century

Everyday Speech

In a century
Last century
For a century
Turn of the century

Conversation Starters

"What do you think was the most important invention of the 20th century?"

"If you could travel back to any century, which one would you choose?"

"How do you think life will change by the end of the 21st century?"

"Do you know any buildings in your city that are over a century old?"

"What is the most impressive thing a human can achieve in a century?"

Journal Prompts

Write about how your family's life has changed over the last century.

Imagine you are living in the 22nd century. Describe a typical day.

Discuss the pros and cons of living in the 21st century compared to the 19th.

Describe a 'century of progress' in a field you are interested in (e.g., music, medicine).

What would you put in a time capsule to be opened in one century?

Frequently Asked Questions

10 questions

The year 1900 is technically the last year of the 19th century. The 20th century began on January 1, 1901.

There are exactly ten decades in one century.

We are currently in the 21st century (2001–2100).

Because the 1st century was years 1–100. So the 2nd century started with 101. The century number is always one ahead of the hundredth digit.

Yes, in cricket, it means 100 runs. In cycling, it means 100 miles.

It is best to write it out in words: 'the eighteenth century'.

It refers to the years around the change from one century to the next (e.g., 1899 to 1901).

No, unless it is at the start of a sentence or part of a proper noun like 'Century 21 Real Estate'.

Half a century is 50 years.

The plural of century is 'centuries'.