/ Dictionary / Index J jumpy: Meaning and Definition of Find definitions for: jump•y Pronunciation: ( jum'pē), [key] — jump•i•er, jump•i•est. subject to sudden, involuntary starts, esp. from nervousness, fear, excitement, etc. characterized by sudden starts, jerks, or jumps: a jumpy narrative. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: jumpy (Thesaurus) jump wire jun Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language