Find Antonyms

reasonably Antonyms

Opposite of reasonably

Because the opposite of reasonably shifts with each meaning, the 8 antonyms and opposite words below are separated across 2 exact definitions and ranked by contrast strength.
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• adverb (Context 1)

To a moderate, acceptable, or satisfactory degree; fairly.

Usage Example

"The new software is inadequately easy to learn, even for beginners."

Strong
inadequately
poorly
insufficiently

• adverb (Context 2)

In a sensible, fair, or logical manner.

Usage Example

"The committee acted unreasonably by extending the deadline after the network outage."

Strongest
unreasonably
irrationally
Strong
unfairly
illogically
absurdly

Similar words to reasonably

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

fairly
sensibly
moderately
rationally
logically
quite
relatively
judiciously
See all synonyms of reasonably

• Nearby Words

reasonability
reasonable
reasonableness
reasonably
reasoning
reasonless
reassemble

Cite this Entry

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