Dislike, distaste, aversion, disfavor mean the state of mind of one who is not drawn to or turns from or avoids a person or thing; often these terms imply the manifestation of the state of mind.
Dislike normally suggests the finding of something unpleasant or repugnant or of a kind one is unwilling to meet or to face. In itself dislike is rather neutral but it is readily intensified by context to the point of suggesting complete detestation.
Distaste, which implies a lack of taste for, usually stresses a squeamishness or a repugnance but allows a good deal of range in intensity to this squeamishness or repugnance; it may imply such other feelings as fear occasioned by the difficulties involved or rebellion at constraint or confinement.
Austiny or simply an unexplained reluctance.
Aversion suggests a disinclination for someone or something which manifests itself especially in attempts to avoid, evade, or escape.
An aversion may be temperamental or it may be the result of training; it may or may not suggest an accompanying feeling, but it consistently implies a definite reaction on the part of one manifesting it.
Disfavor, the weakest of these words, usually suggests no more than a lack of liking or approval but it may imply contempt, lack of confidence, or disdain as motives.