In psychoanalysis, the quality of an instinct (3) that fails to achieve its direct mode of satisfaction or instinctual aim but that obtains partial satisfaction from remote approximations of the behaviour or activity that would satisfy it. Sigmund Freud (1856–1939) introduced the concept in 1921 in his book Group Psychology and the Analysis of the Ego (Standard Edition, XVIII, pp. 69–143, at pp. 138–9) to explain the origin of sociable feelings of affection, the assumption being that if friendships and affection between relatives were not subject to aim-inhibition, then they would be overtly sexual. aim-inhibited adj.