RAVING

[adjective] [before noun], [adverb] [not gradable] [informal] - complete or extreme, or completely or extremelyHe must be a raving idiot/lunatic to drive that far without a break.Her last book was a raving best-seller/success.The last couple of weeks have been a raving nightmare (= extremely difficult).She's a raving beauty (= extremely beautiful).I think you're (stark) raving (= completely) mad to agree to do all that extra work without being paid for it.My father went (stark) raving (= completely) mad when he heard I'd crashed his car.See also raving at rave (SPEAK FOOLISHLY).