wilful or (N American) willful /wilˈfŭl/

1. Self-willed, obstinate, headstrong
2. Deliberate, intentional
3. Willing (Shakespeare)

Wilfully

wilˈfully adverb

• unkennel
• unkennelled
• unkennelling
• unkennels
• unkent
• unkept
• unket
• unkid
• unkillable
• unkind
• unkinder
• unkindest
• unkindled
• unkindlier
• unkindliest
• unkindliness
• unkindlinesses
• unkindly
• unkindness
• unkindnesses
• unking
• unkinged
• unkinging
• unkinglier
• unkingliest