foolish

Universal Words adjective 1 (of actions or behaviour) not showing good sense or judgement SYNSILLY: She's just a vain, foolish woman. * I was foolish enough to believe what Jeff told me. * The accident was my fault-it would be foolish to pretend otherwise. * How could she have been so foolish as to fall in love with him? * a foolish idea / dream / mistake * It was a very foolish thing to do. 2 [notusuallybeforenoun] made to feel or look silly and embarrassed: I felt foolish and a failure. * He's afraid of looking foolish in front of his friends. foolishly adverb: We foolishly thought that everyone would speak English. * Foolishly, I allowed myself to be persuaded to enter the contest. foolishness noun [U]: Jenny had to laugh at her own foolishness.