Bungle something (3)
I believe the answer is:
err
(Other definitions for err that I've seen before include "do something you shouldn't" , "Transgress" , "have an affair?" , "Slip up" , "Be incorrect" .)
I believe the answer is:
err
(Other definitions for err that I've seen before include "do something you shouldn't" , "Transgress" , "have an affair?" , "Slip up" , "Be incorrect" .)