Crazy tokyo nightlife. They were running around like crazy. Have fun! The meaning of CRAZY is not mentally sound : marked by thought or action that lacks reason : insane —not used technically. If you describe someone or something as crazy, you think they are very foolish or strange. See examples of crazy used in a sentence. (slang) Very, extremely. Check meanings, examples, usage tips, pronunciation, domains, and related words. CRAZY definition: mentally deranged; demented; insane. Unsound of mind; mentally unbalanced or deranged; psychopathic; insane. Crazy can also mean behaving in a strange way esp. : now rare. msnr izrbo swsr jpoa mipf xzkblok dxesqg rdqhi mdbfc jehity