instinct

(noun) inborn pattern of behavior often responsive to specific stimuli. Synonyms: inherent aptitude. Examples: "The spawning instinct in salmon." "Altruistic instincts in social animals."

(adj) (followed by `with')deeply filled or permeated. Synonyms: instinct(predicate), replete(predicate). Examples: "Imbued with the spirit of the reformation." "Words instinct with love." "It is replete with misery."