Crossword clues for Foolish: Slang. 4 lettersAnswerClueYAPSTalks foolishly: Slang.GAGAMentally foolish: Slang.GAGAFoolish: Slang.GAGAFoolishly enthusiastic: Slang.GOOFFoolish one: Slang.SIMPFoolish fellow: Slang.JIVEFoolish talk: SlangDOPEIgnorant or foolish person, in slangBATTYFoolish: Slang.BARMYFoolish, in British slang