/ Dictionary / Index I invigorate: Meaning and Definition of Find definitions for: in•vig•or•ate Pronunciation: (in-vig'u-rāt"), [key] — -at•ed, -at•ing. to give vigor to; fill with life and energy; energize. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: invigorate (Thesaurus) invigorant invincible Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language