Explanation at your level:
You use unreasonable when something is not fair. If a friend asks you to give them all your toys, that is not fair. You can say: 'That is unreasonable!' It is a word to say 'no' to things that do not make sense to you.
When you have a problem with a rule or a request, you can say it is unreasonable. It means the request is too big or too hard. For example, if a teacher gives you ten hours of homework, you might think, 'This is unreasonable!' It helps you explain why you are unhappy with a situation.
The word unreasonable is used when expectations are not realistic. It is common in work or school environments. If your boss asks you to finish a project in one hour, you can say, 'That is an unreasonable deadline.' It shows that you are thinking logically about what is possible and what is not.
At this level, you can use unreasonable to describe behavior or demands that lack justification. It is a powerful way to challenge someone’s argument. You might say, 'His demands are completely unreasonable given the current circumstances.' It adds a layer of sophistication to your critique of a situation.
In advanced contexts, unreasonable is used to describe actions that are not just unfair, but also irrational. It implies a departure from standard norms of behavior. In academic or legal writing, it might be used to argue that a specific action lacks legal or logical foundation. It is a precise tool for expressing disapproval of excessive or arbitrary conduct.
Mastery of unreasonable involves understanding its nuances in rhetoric. It can be used to frame an opponent's position as inherently flawed or detached from reality. Whether in literary analysis or high-level debate, the word serves to categorize actions as fundamentally incompatible with reason. It carries the weight of moral or logical judgment, signaling that the subject has moved beyond the bounds of acceptable discourse.
Word in 30 Seconds
- Means not fair or not logical.
- Commonly used to describe demands or expectations.
- Antonym is reasonable.
- Useful for setting personal or professional boundaries.
When we call something unreasonable, we are saying it doesn't make sense or isn't fair. Think of a time someone asked you to do something impossible, like cleaning the entire house in five minutes. That request is unreasonable because it defies logic.
This word is very useful when you need to set boundaries. Whether it's a boss making impossible demands or a friend expecting too much of your time, labeling the situation as unreasonable helps you stand your ground. It’s all about the gap between reality and expectation.
The word unreasonable is built from the prefix un- (meaning 'not') and the word reasonable. The root comes from the Old French raisonnable, which traces back to the Latin rationabilis, related to ratio, meaning 'reason' or 'calculation'.
Historically, the word evolved to describe things that didn't fit into the 'rational' order of the world. By the late 14th century, it was used to describe people or actions that lacked the faculty of reason. It has remained a staple in English to describe anything that goes against the grain of common sense or fairness.
You will often hear this word in professional and personal settings. Common pairings include unreasonable demands, unreasonable expectations, or unreasonable behavior. It’s a strong word, so use it carefully—calling someone 'unreasonable' can sound a bit confrontational.
In formal writing, it implies a lack of objective justification. In casual conversation, it’s a quick way to express frustration with someone who isn't being 'fair.' Always consider the tone; using it too often can make you seem like you are complaining rather than observing a fact.
1. Beyond the pale: Acting in a way that is unreasonable and unacceptable. 2. Off the wall: Sometimes used for ideas that are so unreasonable they are bizarre. 3. Out of line: Used when someone's behavior is unreasonable or inappropriate. 4. Drawing the line: Setting a limit when someone is being unreasonable. 5. Living in a dream world: Used for someone whose expectations are completely unreasonable.
The word is an adjective. It does not have a plural form. It is often preceded by the verb to be (e.g., 'That is unreasonable'). In British and American English, the pronunciation is similar, with the stress on the second syllable: un-REA-son-able.
It rhymes with 'seasonable' or 'treasonable'. Remember that the 's' in the middle sounds like a 'z'. It is a versatile word that modifies nouns directly, such as 'an unreasonable delay', or acts as a subject complement.
Fun Fact
The root 'ratio' also gives us the word 'rate'.
Pronunciation Guide
clear 'z' sound in the middle
similar to UK but with a slightly flatter 'a'
Common Errors
- pronouncing the 's' as 's' instead of 'z'
- stressing the first syllable
- missing the 'a' sound at the end
Rhymes With
Difficulty Rating
Commonly used in news and business.
Useful for formal complaints.
Good for setting boundaries.
Easy to catch in conversation.
What to Learn Next
Prerequisites
Learn Next
Advanced
Grammar to Know
Adjective Order
An unreasonable, large demand.
Linking Verbs
It seems unreasonable.
Prefixes
Un- + reasonable.
Examples by Level
That is unreasonable.
That / is / not fair.
Subject + verb + adjective.
It is unreasonable.
It / is / not logical.
Simple sentence.
Don't be unreasonable.
Do not / be / unfair.
Imperative form.
Is it unreasonable?
Is / it / unfair?
Question form.
That rule is unreasonable.
That / rule / is / unfair.
Adjective modifying a noun.
He is unreasonable.
He / is / not sensible.
Describing a person.
It sounds unreasonable.
It / sounds / unfair.
Linking verb.
Why is it unreasonable?
Why / is / it / unfair?
Wh- question.
Your request is unreasonable.
She made an unreasonable demand.
It is unreasonable to ask for that.
Don't be so unreasonable!
The price is unreasonable.
I think that is unreasonable.
Is it unreasonable to expect help?
The delay was unreasonable.
The manager's demands were quite unreasonable.
It is unreasonable to expect perfection.
He was being completely unreasonable about the bill.
There is an unreasonable amount of noise here.
I find his attitude very unreasonable.
It is not unreasonable to ask for a refund.
They made an unreasonable assumption.
The time limit seems unreasonable.
His unreasonable behavior ruined the meeting.
It is unreasonable to blame her for everything.
The court found the contract terms unreasonable.
She felt the workload was becoming unreasonable.
Don't let his unreasonable comments upset you.
It is unreasonable to assume they know everything.
The price hike is simply unreasonable.
His unreasonable demands led to the strike.
The policy was criticized as being fundamentally unreasonable.
It is unreasonable to expect a compromise in such a climate.
Her unreasonable persistence eventually paid off.
The judge dismissed the claim as unreasonable.
Such an unreasonable interpretation of the law is dangerous.
He displayed an unreasonable degree of stubbornness.
It is unreasonable to ignore the evidence presented.
The proposal was rejected due to its unreasonable scope.
The defendant’s unreasonable conduct was a key factor in the ruling.
His unreasonable adherence to tradition stifled innovation.
The notion that the market will fix itself is arguably unreasonable.
She faced an unreasonable barrage of criticism.
It is unreasonable to conflate these two distinct issues.
The unreasonable nature of the request was apparent to all.
His unreasonable expectations were the root of the conflict.
We must reject such an unreasonable premise.
Common Collocations
Idioms & Expressions
"out of bounds"
beyond acceptable limits
Your request is out of bounds.
casual"pushing it"
asking for too much
You are pushing it with that demand.
casual"off the deep end"
acting irrationally
He went off the deep end.
casual"beyond the pale"
completely unacceptable
His behavior was beyond the pale.
formal"a tall order"
a difficult request
That's a tall order for us.
neutral"out of line"
acting unfairly
You are way out of line.
casualEasily Confused
similar meaning
irrational means lacking the ability to reason; unreasonable means unfair.
His fear was irrational.
similar context
unrealistic means not achievable; unreasonable means not fair.
That goal is unrealistic.
synonym
unfair is broader; unreasonable is more about logic.
The game was unfair.
synonym
illogical is strictly about lack of logic.
His argument was illogical.
Sentence Patterns
It is unreasonable to [verb]
It is unreasonable to expect that.
The [noun] is unreasonable
The price is unreasonable.
That is an unreasonable [noun]
That is an unreasonable demand.
He is being unreasonable
He is being unreasonable today.
I find it unreasonable
I find it unreasonable to wait.
Word Family
Nouns
Verbs
Adjectives
Related
How to Use It
7
Formality Scale
Common Mistakes
unreasoning means not using reason at all, while unreasonable means unfair.
unreason is a noun, not an adjective.
completely is a stronger intensifier.
more precise phrasing.
confusing noun and adjective forms.
Tips
Break it down
Un-Reason-Able: Not-Reason-Capable.
Professional setting
Use it to politely reject impossible deadlines.
Softening the blow
Say 'I feel this is unreasonable' instead of 'You are unreasonable'.
Adjective placement
It usually comes before a noun or after a linking verb.
The 'z' sound
Ensure the 's' sounds like a 'z'.
Don't use unreason
Use unreasonable.
Etymology
It comes from the Latin word for calculation.
Flashcards
Pair it with its antonym 'reasonable'.
Memorize It
Mnemonic
UN (not) + REASON + ABLE (can do) = Cannot be reasoned with.
Visual Association
A person arguing with a brick wall.
Word Web
Challenge
Identify three things today that seem unreasonable to you.
Word Origin
Latin/French
Original meaning: not possessing the faculty of reason
Cultural Context
Can be perceived as an attack on someone's character.
Commonly used in business to negotiate boundaries.
Practice in Real Life
Real-World Contexts
at work
- unreasonable deadline
- unreasonable demand
- unreasonable workload
shopping
- unreasonable price
- unreasonable policy
- unreasonable service
relationships
- unreasonable expectation
- unreasonable behavior
- unreasonable attitude
legal
- unreasonable search
- unreasonable delay
- unreasonable force
Conversation Starters
"What is the most unreasonable rule you have ever encountered?"
"How do you handle people who are being unreasonable?"
"Is it ever okay to be unreasonable?"
"Can you describe a time you felt someone was being unreasonable?"
"Do you think people are becoming more unreasonable these days?"
Journal Prompts
Write about a time you had to deal with an unreasonable request.
How do you maintain your cool when someone is being unreasonable?
Reflect on a time you might have been unreasonable yourself.
What is the difference between being 'firm' and being 'unreasonable'?
Frequently Asked Questions
8 questionsNot necessarily. It means illogical, not just impolite.
Yes, e.g., 'an unreasonable price'.
Add -ly: unreasonably.
It is neutral and used in both formal and informal settings.
Reasonable.
Yes, but 'completely' is more common.
No, it is an adjective.
Yes, it usually carries a negative connotation.
Test Yourself
That request is ___.
It describes a request that is not fair.
What does unreasonable mean?
It means not based on good sense.
An unreasonable person is easy to talk to.
They are usually hard to reason with.
Word
Meaning
These are antonym pairs.
Subject-Verb-Adjective structure.
Score: /5
Summary
Unreasonable describes anything that goes beyond the bounds of fairness or logic.
- Means not fair or not logical.
- Commonly used to describe demands or expectations.
- Antonym is reasonable.
- Useful for setting personal or professional boundaries.
Break it down
Un-Reason-Able: Not-Reason-Capable.
Professional setting
Use it to politely reject impossible deadlines.
Softening the blow
Say 'I feel this is unreasonable' instead of 'You are unreasonable'.
Adjective placement
It usually comes before a noun or after a linking verb.
Related Content
This Word in Other Languages
More business words
에 대한
A2Concerning or relating to; about, regarding.
~대하여
A2About, concerning, regarding.
대해서
A2Concerning or with regard to; about, regarding.
에 대해
A2About; regarding.
풍요롭다
A2To be abundant, prosperous, or rich.
관철하다
B2To carry through, achieve, or persist in one's will or goal until it is accomplished, despite difficulties.
~에 따라
B1According to, depending on; as stated by or determined by.
에 따라
A2According to; in accordance with.
에 의하면
B1According to; as stated by or reported by.
계좌번호
A2A unique identifier for a bank account.
