Synonyms and related words :
abandoned, disobedient, go-go, headstrong, heady, immoderate, incontinent, indulgent, insubordinate, intemperate, irrepressible, irresponsible, lawless, lax, licentious, loose, mutinous, nonrestrictive, out of control, out of hand, permissive, rampant, reinless, riotous, self-willed, unaccountable, unbridled, unchecked, uncoerced, uncompelled, unconstrained, uncontrolled, uncurbed, undisciplined, unforced, ungoverned, uninhibited, unmastered, unmeasured, unmuzzled, unrepressed, unreserved, unrestrained, unrestrictive, unruly, unsubdued, unsuppressed, wanton, wild, wildcat, willful