instinctive
1. [ adjective ] prompted by instinct
Synonyms: instinctual
Examples:

"an instinctive fear of snakes" "instinctual behavior"

Related terms: natural
2. [ adjective ] unthinking; prompted by (or as if by) instinct
Synonyms: natural
Examples:

"a cat's natural aversion to water" "offering to help was as instinctive as breathing"

Related terms: spontaneous
3. [ adjective ] unthinking; as if prompted by instinct
Examples:

"an instinctive mistrust of bureaucrats" "offering to help was as instinctive as breathing"

Related terms: spontaneous
Similar spelling:   instinctively
  instinct
  instructive
  instigative
  instructively
  instinctual
  institute
  instigate
  instigant
  instructed
  incitive
  inactive
  instructress
  instruct
  instillation
  instantiate
  inactivation
  inaction
  instantly
  instantaneous