Mutable

a.	1.	Capable of alteration; subject to change; changeable in form, qualities, or nature. Things of the most accidental and mutable nature. - South.
	2.	Changeable; inconstant; unsettled; unstable; fickle.

Adj.

1.

mutable - capable of or tending to change in form or quality or nature; "a mutable substance"; "the mutable ways of fortune"; "mutable weather patterns"; "a mutable foreign policy" Synonyms: changeable Antonyms: changeless, immutable - not subject or susceptible to change or variation in form or quality or nature; "the view of that time was that all species were immutable, created by God"

able to adapt, adaptable, adjustable, alterable, alterative, ambitendent, ambivalent, at loose ends, brittle, capricious, changeable, changeful, changing, checkered, choppy, corruptible, deciduous, deviating, deviative, deviatory, different, disorderly, divaricate, divergent, diversified, diversiform, double-minded, dubious, dying, ephemeral, erose, erratic, evanescent, ever-changing, fading, fence-sitting, fence-straddling, fickle, fleeting, flexible, flitting, fluctuating, fluid, fly-by-night, flying, fragile, frail, fugacious, fugitive, impermanent, impetuous, impulsive, inconsistent, inconstant, indecisive, infirm of purpose, insubstantial, irregular, irresolute, irresolved, jagged, jerky, kaleidoscopic, lubricious, malleable, many-sided, mercurial, metamorphic, mobile, modifiable, momentary, mortal, motley, movable, mugwumpian, mugwumpish, nonconformist, nondurable, nonpermanent, nonstandard, nonuniform, of two minds, passing, perishable, permutable, plastic, pluralistic, protean, proteiform, ragged, resilient, rough, rubbery, shifty, shilly-shally, short-lived, slippery, spasmodic, sporadic, subject to death, supple, swaying, swinging, temperamental, temporal, temporary, ticklish, transient, transitive, transitory, uncertain, undecided, undetermined, undurable, unenduring, unequable, unequal, uneven, unorthodox, unresolved, unsettled, unstable, unsteady, unsystematic, ununiform, vacillating, variable, variegated, variform, various, varying, volatile, wavering