CFAR's 2019 workshop participant handbook defines an aversion as
any sort of mental mechanism that causes us to be less likely to engage in a particular activity, or to do so only with pain, displeasure, or discomfort. Aversions can be conscious or unconscious, reasoned or felt, verbal or visceral, and they can range anywhere from a slight tinge of antipathy to outright phobias.
Aversion factoring is goal factoring for aversions: trying to understand why you're averse to a particular thing by decomposing it into underlying preferences and experiences....