what is twitchy
1. twitching-a sudden muscle spasm; especially one caused by a nervous condition. twitch, vellication. cramp, muscle spasm, spasm-a painful and involuntary muscular contraction.tic-a local and habitual twitching especially in the face.oun. 1. twitching-a sudden muscle spasm; especially one caused by a nervous condition. twitch, vellication. cramp, muscle spasm, spasm-a painful and involuntary muscular contraction. tic-a local and habitual twitching especially in the face. blepharism-condition in which a person blinks continuously.