liable to change or to be changed; variable.

of changing color or appearance

changeable silk.

adjective

certain , changeless , constant , fixed , lasting , reliable , stable , steady , sure , unchangeable , undeviating

adjective

agitated , capricious , changeful , commutative , convertible , fickle , fitful , flighty , fluctuating , fluid , impulsive , inconstant , indecisive , irregular , irresolute , irresponsible , kaleidoscopic , mercurial , mobile , movable , mutable , permutable , protean , restless , reversible , revocable , shifting , skittish , spasmodic , transformable , transitional , uncertain , unpredictable , unreliable , unsettled , unstable , unsteady , vacillating , vagrant , variable , variant , varying , versatile , volatile , wavering , whimsical , alterable , erratic , fantastic , fantastical , freakish , inconsistent , temperamental , ticklish , plastic , ambivalent , amenable , chatoyant , commutable , crotchety , eccentric , giddy , impermanent , iridescent , labile , transmutable , unsteadfast