1540s (implied in disliking), "be displeased with, regard with some aversion or displeasure," a hybrid which ousted native mislike as the opposite of like (v.). In common with disgust, it sometimes reversed the direction of its action and meant (in this case) "annoy, vex, displease" (1570s), but this sense is archaic or obsolete. Related: Disliked; disliking. The noun sense of "feeling of being displeased" is from 1590s. English in 16c. also had dislove "hate, cease to love," but it did not survive.
my dislike of him was instinctive
I really dislike this salesman