Synonyms and related words :
adrift, afloat, alternating, amorphous, bad, bibulous, capricious, changeable, changeful, crapulent, crapulous, desultory, deviable, disobedient, dizzy, eccentric, erratic, excessive, extravagant, extreme, fast and loose, fickle, fitful, flickering, flighty, flitting, fluctuating, fractious, freakish, froward, giddy, gluttonous, headstrong, heady, immoderate, impetuous, impulsive, inconsistent, inconstant, incontinent, indecisive, indisciplined, indulgent, infirm, inordinate, insubordinate, intemperate, intractable, irregular, irresolute, irresponsible, lawless, licentious, mazy, mercurial, moody, mutinous, naughty, nonconforming, obstinate, overindulgent, overindulging, prodigal, rambling, rampant, recalcitrant, recusant, reinless, restless, roving, scatterbrained, self-indulgent, self-willed, shapeless, shifting, shifty, shuffling, spasmodic, spineless, swinish, too much, transgressive, unaccountable, unbridled, uncertain, unchecked, uncomplying, unconstrained, uncontrollable, uncontrolled, uncurbed, undependable, unduteous, undutiful, uneducated, unfixed, unfrugal, ungovernable, ungoverned, unlimited, unmanageable, unmeasured, unpredictable, unprepared, unreined, unreliable, unrestrained, unruly, unschooled, unsettled, unstable, unstable as water, unstaid, unsteadfast, unsteady, untaught, unthrifty, untoward, untrained, untutored, vacillating, vagrant, variable, vicissitudinary, vicissitudinous, violative, volatile, wandering, wanton, wavering, wavery, wavy, wayward, whimsical, wild, wildcat, willful, wishy-washy