Word Type

Adjective

Adjective

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

Word Relationships

Opposites (Antonyms)

wise wise

Derived Terms

a foolish consistency is the hobgoblin of little minds foolishly foolishment foolishness overfoolish penny wise and pound foolish pound-foolish unfoolish

Derived From

fool

Distinct From

wise

Broader Terms (Hypernyms)

lacking weak-minded

Narrower Terms (Hyponyms)

gullible

Related Terms

cretinous daft as a brush fool imbecilic insane lame moronic retarded thick as a brick

Related Terms

fool ill advised impolitic imprudent inadvisable judgement sense unwise

Similar Terms

absurd cockeyed derisory derp fond fond goofy harebrained harebrained idiotic ill conceived ill-advised ill-conceived impolitic imprudent inadvisable insane laughable ludicrous mad mindless mindless misguided nonsensical preposterous preposterous rattlebrained rattlepated ridiculous scatterbrained scatterbrained scatty silly stupid unadvisable unadvised unwise unwise vacant vacuous wacky whacky whacky zany

Synonym Network

absurd asinine gooselike idiotic ridiculous silly unwise

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