wan·der / ˈwändər/ • v. [intr.] walk or move in a leisurely, casual, or aimless way: he wandered aimlessly through the narrow streets. ∎ move slowly away from a fixed point or place: please don't wander off again | fig. his attention had wandered. ∎ (of a road or river) wind with gentle twists and turns in a particular direction; meander. ∎ [tr.] move or travel slowly through or over (a place or area): she found her wandering the streets. ∎ be unfaithful to one's spouse or regular sexual partner. • n. an act or instance of wandering: she'd go on wanders like that in her nightgown. DERIVATIVES: wan·der·er n.