/ Dictionary / Index J jittery: Meaning and Definition of Find definitions for: jit•ter•y Pronunciation: ( jit'u-rē), [key] — -ter•i•er, -ter•i•est. extremely tense and nervous; jumpy: He's very jittery about the medical checkup. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: jittery (Thesaurus) jitterbug jiujitsu 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