un·set·tled / ˌənˈsetld/ • adj. 1. lacking stability: an unsettled childhood. ∎ worried and uneasy: she felt edgy and unsettled. ∎ liable to change; unpredictable: a spell of unsettled weather. ∎ not yet resolved: one important question remains unsettled. ∎ (of a bill) not yet paid.2. (of an area) having no settlers or inhabitants.DERIVATIVES: un·set·tled·ness n.