- of, relating to, or of the nature of .
- prompted by or resulting from or as if from an instinctive will to survive.; natural; unlearned:
- of, relating to, or resulting from instinct
- conditioned so as to appear innatean instinctive movement in driving
1610s (implied in instinctively), from Latin instinct-, past participle stem of instinguere (see ) + . Related: Instinctiveness.