/ Dictionary / Index I instinctive: Meaning and Definition of Find definitions for: in•stinc•tive Pronunciation: (in-stingk'tiv), [key] — adj. of, pertaining to, or of the nature of instinct. prompted by or resulting from or as if from instinct; natural; unlearned: an instinctive will to survive. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: instinctive (Thesaurus) instinct institute Related Content Daily Word Quiz: penury Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language