[os.cil.late] vi -lat.ed ; -lat.ing [L oscillatus, pp. of oscillare to swing, fr. oscillum swing] (1726) 1 a: to swing backward and forward like a pendulum b: to move or travel back and forth between two points
2: to vary between opposing beliefs, feelings, or theories
3: to vary above and below a mean value syn see swing -- os.cil.la.to.ry adj