foolishness//ˈfuːlɪʃnəs//B2Frequency Level 12NeutralNounfoolishnessSingular1The quality or state of being foolish; lack of good sense or judgment.He later regretted the foolishness of his decision.2A foolish act, idea, or behavior.Spending all your savings on lottery tickets is pure foolishness.SynonymstupidityfollyabsurdityAntonymwisdomprudence
