instinct
noun
• an innate, typically fixed pattern of behaviour in animals in response to certain stimuli.
• "the homing instinct"
instinct
adjective
• imbued or filled with (a quality, especially a desirable one).
• "these canvases are instinct with passion"
Origin:
late Middle English (also in the sense ‘instigation, impulse’): from Latin instinctus ‘impulse’, from the verb instinguere, from in- ‘towards’ + stinguere ‘to prick’.