1. (a.) Having the capacity of varying or changing; as, variable winds or seasons; a variable quantity\.

2. (a.) Liable to vary; too susceptible of change; mutable; fickle; unsteady; inconstant; as, the affections of men are variable; passions are variable.

3. (n.) That which is variable; that which varies, or is subject to change.

4. (n.) A quantity which may increase or decrease; a quantity which admits of an infinite number of values in the same expression; a variable quantity; as, in the equation x2 - y2 = R2, x and y are variables.

5. (n.) A shifting wind, or one that varies in force.

6. (n.) Those parts of the sea where a steady wind is not expected, especially the parts between the trade-wind belts.

able to adapt adaptable adjustable adrift afloat agnostic alterable alterative alternating ambiguous amorphous broken capricious careening catchy chancy changeable changeful changing checkered choppy desultory deviable deviating deviative deviatory dicey different disconnected discontinuous disorderly divaricate divergent diversified diversiform dizzy doubting eccentric equivocal erose erratic ever-changing fast and loose fickle fitful flexible flickering flighty flitting fluctuating fluid freakish giddy guttering halting herky-jerky hesitant hesitating heteroclite immethodical impermanent impetuous impulsive incalculable inconsistent inconstant indecisive indemonstrable infirm intermittent intermitting irregular irresolute irresponsible jagged jerky kaleidoscopic lurching malleable many-sided mazy mercurial metamorphic mobile modifiable moody motley movable mutable nonconformist nonstandard nonuniform patchy permutable plastic pluralistic polysemous protean proteiform ragged rambling resilient restless rough roving rubbery scatterbrained scrappy shapeless shifting shifty shuffling skeptical slippery snatchy spasmatic spasmic spasmodic spastic spineless sporadic spotty staggering supple temperamental ticklish touch-and-go transient transitory uncertain unconfirmable uncontrolled unconvinced undependable undisciplined undivinable unequable unequal uneven unfixed unforeseeable unmethodical unmetrical unorthodox unpersuaded unpredictable unprovable unregular unreliable unrestrained unrhythmical unsettled unstable unstable as water unstaid unsteadfast unsteady unsure unsystematic ununiform unverifiable vacillating vagrant variegated variform various varying veering vicissitudinary vicissitudinous volatile wandering wanton wavering wavery wavy wayward whimsical wishy-washy wobbling wobbly