wilful or (N American) willful /wilˈfŭl/

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

Wilfully

wilˈfully adverb

wilˈfulness noun

• chainbrakes
• chain-breaker
• chain-breakers
• chain bridge
• chain bridges
• chain cable
• chain cables
• chain down
• chain drive
• chain-driven
• chain drives
• chained
• chain gang
• chain gangs
• chain-gear
• chain-gearing
• chain grate
• chain grates
• chain harrow
• chain harrows
• chaining
• chainless
• chainlet
• chainlets
• chain letter