Roget's Thesaurus of English Words and Phrases by Peter Mark Roget

inconstancy; versatility, mobility; instability, unstable equilibrium; vacillation &c (irresolution) 605; fluctuation, vicissitude; alternation &c (oscillation) 314. restlessness &c adj.. fidgets, disquiet; disquietude, inquietude; unrest; agitation &c 315. moon, Proteus, chameleon, quicksilver, shifting sands, weathercock, harlequin, Cynthia of the minute, April showers†; wheel of Fortune; transientness &c 111 [Obs.]. V. fluctuate, vary, waver, flounder, flicker, flitter, flit, flutter, shift, shuffle, shake, totter, tremble, vacillate, wamble†, turn and turn about, ring the changes; sway to and fro, shift to and fro; change and change about; waffle, blow with the wind (irresolute) 605; oscillate &c 314; vibrate between, two extremes, oscillate between, two extremes; alternate; have as man phases as the moon. Adj. changeable, changeful; changing &c 140; mutable, variable, checkered, ever changing; protean, proteiform†; versatile. unstaid†, inconstant; unsteady, unstable, unfixed, unsettled; fluctuating &c v.; restless; agitated &c 315; erratic, fickle; irresolute &c 605; capricious &c 608; touch and go; inconsonant, fitful, spasmodic; vibratory; vagrant, wayward; desultory; afloat; alternating; alterable, plastic, mobile; transient &c 111; wavering. Adv. seesaw &c (oscillation) 314; off and on. Phr. a rolling stone gathers no moss; pictra mossa non fa muschis [It]; honores mutant mores [Lat.]; varium et mutabile semper femina [Lat.] [Vergil].