bouncing, lurching, stumbling, flailing, teetering, tumbling, hurtling, tottering, creaking, swaying, skidding, careening, crashing, bobbing, floundering, rattling, slipping, shuddering, heaving, imploding, shaking, collapsing, jiggling, twitching, wiggling, rocking, juddering, jittered, flopping, beetling, swinging, tilting, falling, thwacked, spinning, crumbling, faltering, whizzing, yawing, thump, hobbling, limping, drifting, stagger, squeaking, leathering, careering, quivering, flinging, gliding, pummeling, whirling, plummeting, scudded, pirouetting, battering, reeling, bounding, vibrating, deflated, thudding, thrusting, uncurling, circling, sliding, flapping, ricocheting, disintegrating, clawing, overbalancing, jerking, hopping, ambling, zipping, coasting, shimmying, chasing, pounding, gyrating, gasping, jagging, dangling, plunging, sputtering, barreling, clinging, trundling, pedaling, humped, drooping, lumbering, hyperextend, jolting, groaning, hovering, swooping, waddling, dazing, levitated, wriggling, knackered, twirling, fumbling, reverberation, roughness, wandering, wavering, wobble, awkwardness, dragging, effervescence, equivocation, heaviness, nervousness, timidity, twisting, vacillation, affectation, cloudiness

unsteady