/ Dictionary / Index I instinct: Meaning and Definition of Find definitions for: in•stinct Pronunciation: (in'stingkt), [key] — n. an inborn pattern of activity or tendency to action common to a given biological species. a natural or innate impulse, inclination, or tendency. a natural aptitude or gift: an instinct for making money. natural intuitive power. in•stinct Pronunciation: (in-stingkt'), [key] — adj. filled or infused with some animating principle (usually fol. by with): instinct with life. animated by some inner force. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: instinct (Thesaurus) instillator instinctive 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