Svíga
Svíga is a term that originates from the Icelandic language and translates to "to swing" or "to sway." In its most common usage, it refers to the act of moving back and forth or from side to side in a rhythmic or oscillating motion. This can describe the movement of an object, such as a pendulum or a tree branch in the wind, or it can refer to a more general sense of unsteadiness or fluctuation.
The word can also be used metaphorically. For instance, one might describe a person's mood as svíga