psych / sīk/ (also psyche) • v. 1. [tr.] inf. mentally prepare (someone) for a testing task or occasion: we had to psych ourselves up for the race.2. (usu. psyche) [intr.] Bridge make a psychic bid.• n. 1. inf. short for psychiatrist or psychologist. ∎ short for psychiatry or psychology.2. (usu. psyche) Bridge a psychic bid.• adj. 1. inf. short for psychiatric.2. short for psychedelic: a rare old psych album.PHRASAL VERBS: psych someone out inf. intimidate an opponent or rival by appearing confident or aggressive: guys who try to lift heavy weights in a mistaken attempt to psych out the other guys.psych something out inf. analyze something in psychological terms.