variable (adjective) variable: changing, changeable
Sinonime: capricious, changeful,
fickle, fitful,
flexible, fluctuating,
fluid, iffy, inconstant,
irregular,
mercurial,
mobile, mutable, protean, shifting, shifty,
slippery*, spasmodic,
temperamental, ticklish,
uncertain, unequable,
unsettled,
unstable, unsteady,
vacillating,
volatile, waffling,
wavering, yo-yo
Antonime: invariable, unchangeable,
unchanging, unvarying