backpacker, camper, hiker; transient, summer resident, estivator. vacillate, v. 1. shilly-shally, tergiversate, seesaw, Inf. flip-flop, Inf. yo-yo; oscillate, fluctuate, go back and forth, blow hot and cold, keep changing one's mind; dither, waver, falter, hesitate, pause, be irresolute, be indecisive, straddle the fence, run with the hare and hunt with the hounds, play both ends against the middle; equivocate, hedge, hem and haw, not give a straight answer, beat around the bush, pussyfoot.
2. sway, rock, reel, stagger, totter, Chiefly U.S. teeter, Chiefly U.S. teeter-totter, wobble.
3. swing, wave, wag, move back and forth, vibrate, flutter, undulate, ripple. vacillating, adj. 1. vacillant, vacillatory, indecisive, irresolute, unresolved, unsettled, uncertain, undecided, ambivalent, of two minds; of mixed feelings; wavering, dithering, faltering, hesitating, hesitant, wishy-washy; oscillating, fluctuating, going back and forth, blowing hot and cold, betwixt and between, shilly-shally, shilly-shallying, tergiversating, sitting on or straddling the fence; off-again on-again, changeable, fickle, capricious, whimsical, erratic, up-and-down.
2. swaying, moving back and forth, rocking, reeling, staggering, tottering, Chiefly U.S. teetering, Chiefly U.S. teeter-tottering, wobbling. vacillation, n. 1. indecision, indecisiveness, shillyshally, shilly-shallying, tergiversation, fence-sitting, fence-straddling; irresolution, irresoluteness, uncertainty, incertitude, unsureness, infirmity of purpose, unsettledness, ambivalence, double-mindedness, mixed feelings; wavering, hesitation, hesitancy, faltering, oscillation, fluctuation, going back and forth, blowing hot and cold; changeableness, fickleness, capriciousness, whimsicality, whimsicalness, erraticism.
2. swaying, moving back and forth, vibration, rise and fall, rising and falling, ebb and flow, flux and reflux; unsteady movement, rocking, reeling, staggering, tottering, Chiefly U.S. teetering, Chiefly U.S. teeter-totterihg, wobbling. vacuity, n. 1. vacancy, emptiness, void, voidness, vacuum, vacuousness; nothingness, nihility.
2. absence, lack, want, deficiency; need, privation, deprivation, dearth.
3. hollowness, meaninglessness, purposelessness, goallessness; boredom, ennui, tedium, dreariness, dullness, wearisomeness; flatness, stagnation, sameness, monotony.
4. inanity, fatuity, silliness, asininity; unintelligence, stupidity, brainlessness, foolishness, empty-headedness, idiocy, imbecility; blankness, incognizance, unawareness, reverie, daydream; dreaminess, woolgathering, absent-mindedness, abstraction, distraction, preoccupation.