psycho- or psych-
pref.
1.
1. Mind; mental: psychogenic.
2. Mental activities or processes: psychomotor.
2. Psychology; psychological: psychohistory.
1. Affected with madness; insane.
2. Informal. Departing from proportion or moderation, especially:
1. Possessed by enthusiasm or excitement: The crowd at the game went crazy.
2. Immoderately fond; infatuated: was crazy about boys.
3. Intensely involved or preoccupied: is crazy about cars and racing.
4. Foolish or impractical; senseless: a crazy scheme for making quick money.
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