Done deliberately and intentionally, often implying stubbornness or disregard for consequences.
From Middle English wilful, compound of 'will' (Old English willa meaning 'desire' or 'intention') and 'full'. Originally meant simply 'full of will' but developed negative connotations of obstinacy.
In legal contexts, 'willful' carries significant weight because it implies not just intention but deliberate disregard for known legal or moral standards - the difference between a mistake and willful misconduct can determine criminal versus civil liability.
Complete word intelligence in one call. Free tier — 50 lookups/day.