1. 任性的：self-will 任性 | self-willed 任性的 | self-winding 自动上发条的
2. 任性的/顽固的：self-will /任性/固执/ | self-willed /任性的/顽固的/ | self-winding /自动上发条的/
1. 任性的;固执的;倔强的
Someone who is self-willed is determined to do the things that they want to do and will not take advice from other people.
e.g. He was very independent and self-willed.
他非常独立而且固执己见。