The word "un-settle" refers to the act of disturbing or upsetting something or someone. An antonym for this term might be "settle," which connotes the idea of calming or soothing. Another possible antonym could be "comfort," which suggests providing a sense of reassurance or security. Alternatively, "ease" could be seen as an antonym, as it implies the absence of tension or anxiety. Other options might include "relax," which indicates a release of stress, or "pacify," which conveys the sense of a resolution to conflict or discord. Regardless of the specific antonym used, it is clear that "un-settling" is about upsetting the natural balance of things, while its opposite seeks to restore this balance through calm, security, and stability.