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Definitions

reasonable

[ree-zuh-nuh-buhl, reez-nuh-] / ˈri zə nə bəl, ˈriz nə- /
ADJECTIVE
moderate, tolerable
Synonyms
STRONGEST
acceptable cheap equitable fair feasible honest humane impartial judicious justifiable legitimate modest objective plausible proper prudent rational restrained sane sensible understandable valid
WEAK
analytical average circumspect conservative controlled discreet fit inexpensive just knowing legit low-cost low-priced making sense okay politic reflective right sapient sound standing to reason temperate unexcessive unextreme within reason
Antonyms
STRONGEST
assured biased bold invalid irrational partial prejudiced senseless unacceptable unfair unjust unlikely unrealistic unreasonable unsound unwarranted unwise
WEAK
expensive implausible impractical intolerable nonsensical outrageous stupid
ADJECTIVE
intelligent, practical
Synonyms
STRONGEST
clear-cut consistent credible judicious justifiable logical plausible rational reasoned sane sensible sober thoughtful wise
WEAK
advisable all there arguable believable cerebral cognitive commonsensical conscious consequent cool in one's right mind levelheaded perceiving percipient ratiocinative reasoning reflective sound tenable thought-out together tolerant unbiased unprejudiced well-advised
Antonyms
STRONGEST
foolish idiotic implausible improbable irrational senseless stupid thoughtless unbelievable unlikely unrealistic unreasonable unsound unwise
WEAK
expensive impractical intolerable nonsensical outrageous

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

This seems reasonable, and Arlington Heights agrees with the Bears.

From The Wall Street Journal • Apr. 1, 2026

Northrop’s support looks reasonable, with 54% of analysts rating its stock Buy.

From Barron's • Apr. 1, 2026

We learned a lot from German Wikipedia and Stack Overflow about how A.I. restrictions can be implemented and what constitutes a reasonable exception.

From Slate • Apr. 1, 2026

“Tom Homan being in charge and publicly taking a much lighter touch and appearing reasonable to the average voter is why you’re seeing this turnaround,” he said.

From Los Angeles Times • Apr. 1, 2026

It was a reasonable request, but an overwhelming one, too.

From "The Woman All Spies Fear" by Amy Butler Greenfield

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.