The Interpersonal Sensitivities Circumplex (ISC) assesses individual differences in sensitivities to aversive interpersonal behaviors. In this research (total N = 1,519), we developed and validated a German adaptation of the ISC (ISC-G) and extended the nomological net of interpersonal sensitivity as a construct. Using the structural summary method, we investigated associations with self- and informant reports of adaptive (interpersonal) personality traits as well as self-reported personality functioning, maladaptive personality traits, childhood trauma, and hypersensitivity. Replicating and extending previous findings with the ISC, the present research sheds light on the interplay between different personality traits and the perception of others’ interpersonal behavior. Results suggested that individuals report experiencing interpersonal behavior opposite to their own self-description in terms of agency and communion as aversive. This oppositional pattern was most pronounced for antagonistic vs. agreeable traits/behaviors. We discuss these results in the context of research on personality pathology.