1. (a.) Rising or swelling in waves; full of waves.

2. (a.) Playing to and fro; undulating; as, wavy flames.

3. (a.) Undulating on the border or surface; waved.

adrift afloat alternating amorphous bent billowing billowy capricious changeable changeful curvaceous curvate curvated curve curved curvesome curviform curvilineal curvilinear curving curvy desultory deviable dizzy eccentric erratic fast and loose fickle fitful flickering flighty flitting fluctuating freakish geosynclinal giddy impetuous impulsive inconsistent inconstant incurvate incurvated incurved incurving indecisive infirm irregular irresolute irresponsible labyrinthine mazy meandering mercurial moody rambling recurvate recurvated recurved recurving restless rolling roving scatterbrained serpentine shapeless shifting shifty shuffling sinuous spasmodic spineless surgy tortuous unaccountable uncertain uncontrolled undependable undisciplined undulant undulate undulated undulating undulative undulatory unfixed unpredictable unreliable unrestrained unsettled unstable unstable as water unstaid unsteadfast unsteady vacillating vagrant variable vicissitudinary vicissitudinous volatile wandering wanton wavering wavery wayward whimsical wishy-washy