Appraisal research based on participants' self-report of emotional experiences is predicated on the assumption that the academic community and the lay public share comparable meanings of the emotion terms used. However, this can be a risky assumption to make, as in the case of the emotion disgust which appears in common usage to reflect irritation, or anger, as often as repulsion. To examine the theoretical versus the lay meaning of disgust, 140 undergraduates were asked to recall a time when they (...) felt either angry, disgust, disgusted, revulsion, or grossed out. Analysis of event recall responses and emotional experience measures suggests that the common understanding of the word disgust reflects a combination of the conceptual meanings of disgust and anger whereas the slang term grossed out more closely captures the theoretical construct of disgust. Implications of these findings for emotion research based on self-report are discussed. (shrink)