adjective, -zi⋅er, -zi⋅est, noun, plural -zies.| 1. | mentally deranged; demented; insane. |
| 2. | senseless; impractical; totally unsound: a crazy scheme. |
| 3. | Informal. intensely enthusiastic; passionately excited: crazy about baseball. |
| 4. | Informal. very enamored or infatuated (usually fol. by about): He was crazy about her. |
| 5. | Informal. intensely anxious or eager; impatient: I'm crazy to try those new skis. |
| 6. | Informal. unusual; bizarre; singular: She always wears a crazy hat. |
| 7. | Slang. wonderful; excellent; perfect: That's crazy, man, crazy. |
| 8. | likely to break or fall to pieces. |
| 9. | weak, infirm, or sickly. |
| 10. | having an unusual, unexpected, or random quality, behavior, result, pattern, etc.: a crazy reel that spins in either direction. |
| 11. | Slang. an unpredictable, nonconforming person; oddball: a house full of crazies who wear weird clothes and come in at all hours. |
| 12. | the crazies, Slang. a sense of extreme unease, nervousness, or panic; extreme jitters: The crew was starting to get the crazies from being cooped up belowdecks for so long. |
| 13. | like crazy,
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crazy
In addition to the idioms beginning with crazy, also see drive someone crazy; like crazy.