1. 任性; 顽固; 倔强; 故意 (名)：wilfully 任性地, 固执地 (副) | wilfulness 任性; 顽固; 倔强; 故意 (名) | wiliness 诡计多端; 狡猾 (名)
noun
1. the trait of being prone to disobedience and lack of discipline
Synonym: unruliness fractiousness willfulness