Word Type

Adjective

Adjective

The word "reasonable" can be used as adjective and adjective.

Word Relationships

Opposites (Antonyms)

arbitrary unreasonable unreasonable

Derived Terms

beyond a reasonable doubt beyond reasonable doubt nonreasonable reasonability reasonable doubt reasonable person reasonable time reasonableness reasonably semireasonable

Derived From

reason

Etymologically Related To

able reason

Related Terms

agreeable expensive fair just logical rational satisfactory valid

Similar Terms

commonsense commonsensible commonsensible commonsensical fair healthy intelligent just level headed level-headed levelheaded logical moderate moderate rational rational sound strong tenable valid well founded well-founded

Synonym Network

prudent rational reasonous

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.