bonkers
adjective
ˈbɒŋkəz 
ˈbɑːŋkərz completely crazy and silly
I'll go bonkers if I have to wait any longer.He thought I was stark raving bonkers to give up my job. Idioms
see (stark) raving mad/bonkers at raving adverb
Definition of bonkers adjective from the Oxford Advanced Learner's Dictionary
ˈbɒŋkəz ˈbɑːŋkərz 