Pronunciation: (in-stingk'tiv), [key]
1. of, pertaining to, or of the nature of instinct.
2. prompted by or resulting from or as if from instinct; natural; unlearned: an instinctive will to survive. Also,in•stinc•tu•alPronunciation: (in-stingk'chOO-ul). [key]
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.