adjective
1.
Synonyms: changeable 1, changeful, fluid, mobile, protean, unsettled, unstable, unsteady, variable, weathery
Related Word: fluctuating, swaying, swinging, wavering; fickle, inconstant, unstable
Contrasted words: equable, even, steady, uniform; durable, lasting, permanent, stable
Antonyms: immutable
2.
liable to change or to be changed
a flexible and perhaps too mutable policy
Synonyms: changeable, inconstant, shifty, slippery, uncertain, unstable, unsteady, variable; compare changeable 1, inconstant 1
Related Word: changeful, protean, unsettled; capricious, fickle, inconsistent, lubricious, mercurial, temperamental, ticklish, volatile; fluctuating, shilly-shally, vacillating, wavering
Contrasted words: constant, established, fixed, immovable, inalterable, invariable, set, unalterable, unchangeable, unmodifiable, unmovable
Antonyms: immutable