Wilful

Definition of Wilful
Adjective

1. willful, wilful (done by design) "the insult was intentional"; "willful disobedience"

2. froward, headstrong, self-willed, willful, wilful (habitually disposed to disobedience and opposition)

Adverbs for Wilful
naturally; inveterately; uncontrollably; notoriously; wickedly; stubbornly; foolishly; unreasonably; unmanageably; erratically; fanatically; impudently;  inconsiderately; ungraciously; rudely; grossly; brutally; selfishly.