adrift afloat alternating amorphous capricious changeable changeful desultory deviable dizzy eccentric erratic fickle fitful flickering flighty flitting fluctuating freakish giddy impetuous impulsive inconsistent inconstant indecisive infirm irregular irresolute irresponsible mazy mercurial moody rambling restless roving scatterbrained shapeless shifting shifty shuffling spasmodic spineless unaccountable uncertain uncontrolled undependable undisciplined unfixed unpredictable unreliable unrestrained unsettled unstable unstable as water unstaid unsteadfast unsteady vacillating vagrant variable vicissitudinary vicissitudinous volatile wandering wanton wavering wavery wavy wayward whimsical wishy-washy