SG Heritage Dictionary

Oscillatory [Adjective] Webster's Dictionary 1828

Moving backward and forward like a pendulum; swinging; as an oscillatory motion.

Oscillatory [Adjective] Webster's Dictionary 1913

Moving, or characterized by motion, backward and forward like a pendulum; swinging; oscillating; vibratory; as, oscillatory motion.

Oscillation Roget’s Thesaurus §314

N. oscillation, vibration, libration, motion of a pendulum, nutation, undulation, pulsation, pulse, alternation, coming and going, ebb and flow, flux and reflux, ups and down, fluctuation, vacillation, wave, vibratiuncle, swing, beat, shake, wag, seesaw, dance, lurch, dodge, logan, loggan, rocking-stone, vibroscope

V. oscillate, vibrate, librate, alternate, undulate, wave, rock, swing, pulsate, beat, wag, waggle, nod, bob, courtesy, curtsy, tick, play, wamble, wabble, dangle, swag, fluctuate, dance, curvet, reel, quake, quiver, quaver, shake, flicker, wriggle, roll, toss, pitch, flounder, stagger, totter, move up and down, bob up and down, pass and repass, ebb and flow, come and go, vacillate, teeter, brandish, shake, flourish

Adj. oscillating, oscillatory, undulatory, pulsatory, libratory, rectilinear, vibratory, vibratile, pendulous

Adv. to and fro, up and down, backwards and forwards, hither and yon, seesaw, zigzag, wibble-wabble, in and out, from side to side, like buckets in a well