Self-willed

прилагательное своевольный, упрямый, своенравный Синоним(ы): wilful, obstinate

Большой англо-русский словарь

Self-willed

adjective governed by one's own will; not yielding to the wishes of others; obstinate • self-willedly adverb • self-willedness noun

Merriam-Webster's Collegiate Dictionary