Find Antonyms

unreasonable Antonyms

Opposite of unreasonable

Because the opposite of unreasonable shifts with each meaning, the 12 antonyms and opposite words below are separated across 2 exact definitions and ranked by contrast 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 reasonable to expect the team to finish the entire project overnight."

Strongest
reasonable
rational
sensible
fair
logical
Strong
just
level-headed
pragmatic

• 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 reasonable fee for checked luggage."

Strongest
reasonable
moderate
fair
Strong
modest
affordable
acceptable

Similar words to unreasonable

Words similar to unreasonable shift depending on context. Common synonyms include:

irrational
excessive
exorbitant
unfair
immoderate
illogical
extortionate
unrealistic
See all synonyms of unreasonable

• Nearby Words

unrealistically
unreality
unrealized
unreasonable
unreasonableness
unreasonably
unreasoning

Cite this Entry

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