MOTHERFUCKER

US also mother [noun] [C] [esp. US] taboo [slang] - an extremely insulting name for a stupid, unpleasant or unpopular person, esp. one who has done something which has made you angryIf that motherfucker touches my car again, I'll break his fingers!(figurative) That was a motherfucker of an exam. (= It was extremely difficult.)(esp. US taboo slang) Motherfucker can also be a person or thing which is admired.He was a sweet old motherfucker, and I miss him a lot.