/ Dictionary / Index J jactation: Meaning and Definition of Find definitions for: jac•ta•tion Pronunciation: ( jak-tā'shun), [key] — n. boasting; bragging. a restless tossing of the body. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: jactation (Thesaurus) Jacques Bonhomme jactitation Related Content Daily Word Quiz: reclusive Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language