Fixation/fɪkˈseɪʃn/ Definition 1 of 4Pro Tip 1/2Unhealthy Obsession Often indicates a problematic level of interest beyond normal enthusiasm. His fixation on video games is affecting his grades. Pro Tip 2/2Intensity of Emotion Used to describe strong feelings that go beyond mere interest or liking. There's a fixation in her eyes when she talks about art.