disapproval If you describe someone or something as crazy, you think they are very foolish or strange. People thought they were all crazy to try to make money from manufacturing That's why he's got so caught up with this crazy idea about Mr. Trancas. + crazily cra·zi·ly The teenagers shook their long, black hair and gesticulated crazily
marked by foolish or unreasoning fondness; "she was crazy about him"; "gaga over the rock group's new album"; "he was infatuated with her"
possessed by inordinate excitement; "the crowd went crazy"; "was crazy to try his new bicycle"
If you are crazy about something, you are very enthusiastic about it. If you are not crazy about something, you do not like it. He's still crazy about both his work and his hobbies = mad Crazy is also a combining form. Every football-crazy schoolboy in Europe dreams of one day being involved in the championships