Entry 1 sense Webster, 1913 Jumpy /jŭm'-pē/ · Jump·y · IPA /ˈd͡ʒʌmpi/ 01 a. Jumping, or inducing to jump; characterized by jumps; 1. Jumping, or inducing to jump; characterized by jumps; Syn. edgy, fidgety, high-strung, in suspense(predicate), jittery, nervous, nervy, overstrung, restive, uneasy, uptight.