insane Synonyms

mad harebrained raving preposterous deranged psychotic nutty nonsensical frenzied maniacal maniac unhinged irrational lunatic ludicrous crazy crazed berserk batty unbalanced senseless bonkers wild absurd demented whacky around the bend fruitcake cockeyed looney nutcase mishegoss weird madwoman fruity washing-up gonzo kookie dotty kooky loopy nuts crackers round the bend feebleminded bats amok barmy grigri unzipped