Nonprofessional (adjective)

Not relating to or involving a profession or profession activity.

Origin:

Non- + professional.

Examples:

1. The company only hires professional and nonprofessional staff.
2. The competition is open to both professional and nonprofessional players.
3. This website is for nonprofessional use only.
4. The event is for nonprofessional athletes.
5. The class is for nonprofessional dancers.