Synonyms:
- adrift,
- afloat,
- alternating,
- amorphous,
- capricious,
- changeable,
- changeful,
- coquettish,
- desultory,
- deviable,
- dizzy,
- eccentric,
- erratic,
- faddish,
- fast and loose,
- fickle,
- fitful,
- flickering,
- flighty,
- flirtatious,
- flitting,
- fluctuant,
- fluctuating,
- fluctuational,
- freakish,
- giddy,
- harmonic,
- impetuous,
- impulsive,
- inconsistent,
- inconstant,
- indecisive,
- infirm,
- irregular,
- irresolute,
- irresponsible,
- libratory,
- light,
- mazy,
- mercurial,
- moody,
- nutational,
- oscillating,
- oscillatory,
- pendular,
- pendulating,
- pendulous,
- periodic,
- quicksilver,
- rambling,
- resonant,
- restless,
- roving,
- scatterbrained,
- shapeless,
- shifting,
- shifty,
- shilly-shally,
- shilly-shallying,
- shuffling,
- skittish,
- spasmodic,
- spineless,
- toying,
- unaccountable,
- uncertain,
- uncontrolled,
- undependable,
- undisciplined,
- unfixed,
- unpredictable,
- unreliable,
- unrestrained,
- unsettled,
- unstable,
- unstable as water,
- unstaid,
- unsteadfast,
- unsteady,
- vacillatory,
- vagrant,
- variable,
- versatile,
- vibratile,
- vibrating,
- vibratory,
- vicissitudinary,
- vicissitudinous,
- volatile,
- wandering,
- wanton,
- wavering,
- wavery,
- wavy,
- wayward,
- whimsical,
- wishy-washy,
- wobbly