also: プロフェショナル
Used as both a noun and a na-adjective to describe someone or something that is professional, expert, or done with high skill and reliability.
He approached the work with a professional attitude.
That athlete is a true professional.
She's a true professional no matter what the job is.
He took responsibility to the end as a professional.
She has a strong sense of professionalism.
He remains thoroughly professional at all times.