na-adjective, noun which may take the genitive case particle 'no'
competent; suitable; qualified
Describes a person who has the right skills or qualities for a particular role or task. Often used in hiring or assignment contexts.
He is suitable for this job.
We will continue recruiting until we find a qualified person.
有能 describes a person's overall ability, while 適任 focuses narrowly on being well-suited for a specific role or task.
適任 describes a person who is the right fit for a job or role, while 適性 refers to the underlying aptitude that makes them so.
Compound of 適 (suitable) and 任 (duty, role). The combination conveys fitness for a particular responsibility.