Find Synonyms

unreasonable Synonyms

Another word for unreasonable

Choosing another word for unreasonable depends on context, so the 19 synonyms and similar words below are separated across 2 exact definitions and ranked by match strength.
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• adjective (Context 1)

Not guided by or based on good sense, sound judgment, or fairness.

Usage Example

"The manager realized it was irrational to expect the team to finish the entire project overnight."

Strongest
irrational
unfair
illogical
Strong
unrealistic
unjust
unjustified
absurd
preposterous
arbitrary
senseless

• adjective (Context 2)

Exceeding the bounds of what is normal, moderate, or acceptable in amount, price, or degree.

Usage Example

"Several customers complained that the airline charged an excessive fee for checked luggage."

Strongest
excessive
exorbitant
immoderate
Strong
extortionate
inordinate
undue
outrageous
unconscionable
extreme

Opposites of unreasonable

The opposite of unreasonable shifts depending on context. Common opposites include:

reasonable
rational
moderate
sensible
fair
logical
modest
just
See all opposites of unreasonable

• Nearby Words

unrealistically
unreality
unrealized
unreasonable
unreasonableness
unreasonably
unreasoning

Cite this Entry

Wordmom. (2026). Synonyms for Unreasonable. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/unreasonable
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