wilful
1 adamant, bull-headed, determined, dogged, froward (archaic) headstrong, inflexible, intractable, intransigent, mulish, obdurate, obstinate, persistent, perverse, pig-headed, refractory, self-willed, stiff-necked, stubborn, uncompromising, unyielding
2 conscious, deliberate, intended, intentional, purposeful, volitional, voluntary, willed
1 biddable, complaisant, compromising, docile, flexible, good-natured, obedient, pliant, tractable, yielding
2 accidental, involuntary, uncalculated, unconscious, unintentional, unplanned, unwitting