Fickle

a.

1.

Not fixed or firm; liable to change; unstable; of a changeable mind; not firm in opinion or purpose; inconstant; capricious; as, Fortune's fickle wheel. They know how fickle common lovers are. - Dryden.

Adj.	1.	fickle - marked by erratic changeableness in affections or attachments; "fickle friends"; "a flirt's volatile affections" Synonyms: volatile
	2.	fickle - liable to sudden unpredictable change; "erratic behavior"; "fickle weather"; "mercurial twists of temperament"; "a quicksilver character, cool and willful at one moment, utterly fragile the next" Synonyms: mercurial, quicksilver, erratic

adrift, afloat, agnostic, alternating, ambiguous, ambitendent, ambivalent, amorphous, at loose ends, brittle, chancy, changeful, coquettish, corruptible, deciduous, derelict, desultory, deviable, dicey, disaffected, disloyal, dizzy, double-minded, doubting, dubious, dying, eccentric, ephemeral, equivocal, erratic, evanescent, faddish, fading, faithless, false, fanciful, fast and loose, fence-sitting, fence-straddling, fitful, fleeting, flickering, flighty, flirtatious, flitting, fluctuating, fly-by-night, flying, fragile, frail, freakish, frivolous, fugacious, fugitive, giddy, hesitant, hesitating, impermanent, impetuous, impulsive, incalculable, inconsistent, indecisive, indemonstrable, infirm, infirm of purpose, insubstantial, irregular, irresolute, irresolved, irresponsible, light, lubricious, mazy, mercurial, momentary, moody, mortal, mugwumpian, mugwumpish, mutable, nondurable, nonpermanent, not true to, of bad faith, of two minds, passing, perishable, polysemous, quicksilver, rambling, recreant, roving, scatterbrained, shapeless, shifting, shifty, short-lived, shuffling, skeptical, skittish, spasmodic, spineless, temperamental, temporal, temporary, ticklish, touch-and-go, toying, transient, transitive, transitory, trothless, unaccountable, uncertain, unconfirmable, uncontrolled, unconvinced, undecided, undependable, undetermined, undisciplined, undivinable, undurable, unenduring, unfaithful, unfixed, unforeseeable, unloyal, unpersuaded, unpredictable, unprovable, unreliable, unresolved, unrestrained, unsettled, unstable as water, unstaid, unsteadfast, unsteady, unsure, untrue, untrustworthy, unverifiable, vacillating, vagrant, variable, versatile, vicissitudinary, vicissitudinous, volatile, wandering, wanton, wavering, wavery, wavy, wayward, whimsical, wishy-washy