← BackshareGuessdiddly squat/ˈdɪdli ˌskwɑt/nounAbsolutely nothing; a very small or worthless amount.He complained all day but did diddly-squat to help.The company paid me diddly-squat for my overtime.You know diddly-squat about my life, so don't judge me.Synonymsnothingzerozilch