2. Informal Departing from proportion or moderation, especially:
a. Possessed by enthusiasm or excitement: The crowd at the game went crazy.
b. Immoderately fond; infatuated: was crazy about boys.
c. Intensely involved or preoccupied: is crazy about cars and racing.
d. Foolish or impractical; senseless: a crazy scheme for making quick money.
e. Intensely annoyed or irritated: It makes me crazy when you don't tell me you're going to be late.