The title of this paper refers specifically to changing attitudes toward the term “acting out,” as used in the psychoanalytic journal literature in the last decade. I ask and explore how the term “acting out” are used by psychoanalysts in the 1980s and early 1990s. What does it mean in the context of psychoanalytic treatment? Is it used differently by different schools of thought? What did it mean for analysts to prohibit patients from acting out? Does the analyst's stance of neutrality prevent acting out? Or could it actually encourage it? When is the analyst acting out in response to patient's acting-out behavior? And how does the use of this term, or lack thereof, reflect thinking about what kinds of patients can be treated in analysis? How does its use reflect the thinking about treatment?