See willful in Webster's New World Roget's A-Z Thesaurus II
also
wilfull adjective
Done or said on purpose:
deliberate, intended, intentional, purposeful, voluntary, witting. See purposeDone by one's own choice:
free, spontaneous, uncompelled, unforced, volitional, voluntary. See willingTenaciously unwilling to yield:
bullheaded, dogged, hardheaded, headstrong, mulish, obstinate, pertinacious, perverse, pigheaded, stiff-necked, tenacious. See resist
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