round the bend Synonyms

nutty loco loony kookie haywire fruity wacky around the bend barmy bats bonkers kooky loopy balmy batty buggy cracked crackers dotty daft whacky nuts not right in the head nutty as a fruitcake off one's rocker lost your marbles bats in the belfry nutty as fruitcake raving mad up the pole stark raving mad screwy round the twist out to lunch out of one's head mad as a March hare mad as a hatter crazed cuckoo demented deranged flipped insane mad mental non compos mentis crazy of unsound mind bananas aper