verb (used without object), os·cil·lat·ed, os·cil·lat·ing. to swing or move to and fro, as a pendulum does. to vary or vacillate between differing beliefs, opinions, conditions, etc.: He oscillates regularly between elation and despair.

What is the verb of oscillation?

intransitive verb. 1a : to swing backward and forward like a pendulum The fan was oscillating. b : to move or travel back and forth between two points he oscillates regularly between his comfortable home …

Is oscillating an adjective?

Moving in a repeated back-and-forth motion.