Not behaving normally (informal) (6)
I believe the answer is:
screwy
(Other definitions for screwy that I've seen before include "weird" , "Daft (with a thread?)" , "cuckoo?" , "Off one's rocker" , "Crazy" .)
I believe the answer is:
screwy
(Other definitions for screwy that I've seen before include "weird" , "Daft (with a thread?)" , "cuckoo?" , "Off one's rocker" , "Crazy" .)