Added 9 October 2026 willfully adverb Categories: Describing WordsRare Words adverb ! Definition from WordNet 3.1, Princeton University. More about willfully at Wordnik → Where our words come from → In a willful manner. she had willfully deceived me Related Words: wilfullycasuallywillinglybrazenlyvoluntarilyarbitrarilyunscrupulouslyrecklesslyindiscriminatelyconsciouslydeliberatelyadvisedly Back to today's word