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aversion (n.)
1590s, "a turning away from;" 1650s in the figurative sense of "mental attitude of repugnance or opposition," from French aversion (16c.) and directly from Latin aversionem (nominative aversio), noun of action from past-participle stem of aversus "turned away, backwards, behind, hostile," itself past participle of avertere "to turn away" (see avert). Aversion therapy in psychology is from 1946.

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