foolish implies the character of being or seeming unable to use judgment, discretion, or good sense.

FOOLISH definition: resulting from or showing a lack of sense; ill-considered: unwise. See examples of foolish used in a sentence.

Definition of foolish adjective in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

FOOLISH definition: 1. unwise, stupid, or not showing good judgment: 2. unwise, stupid, or not showing good judgment…. Learn more.

Define foolish. foolish synonyms, foolish pronunciation, foolish translation, English dictionary definition of foolish. adj. 1. Lacking or exhibiting a lack of good sense or judgment; silly: a foolish boy; a foolish …

lacking in good sense or judgment, or appearing to lack them; silly. It was no surprise that he lost all his money as he'd always been foolish in that way. I was young and foolish then, and I made decisions …

Jan 20, 2026 · Adjective foolish (comparative more foolish, superlative most foolish) (of a person, an action, etc.) Lacking good sense or judgement; unwise.

fool′ish•ly, adv. fool′ish•ness, n. 1. 2. senseless, vacant, vapid, simple, witless. Foolish, fatuous, silly, inane, stupid, asinine imply weakness of intellect and lack of judgment.

• It is foolish to think, therefore, that any social, cultural affair or any language has remained the same. be foolish enough to do something • He sincerely hoped that the Navigator would never be foolish …

If you look or feel foolish, you look or feel so silly or ridiculous that people are likely to laugh at you. I just stood there feeling foolish and watching him. I didn't want him to look foolish and be laughed at.