Unlicensed (adjective)

1. Not having or not required to have a license: an unlicensed driver; an unlicensed bar.
2. Not authorized; not legally permitted.

Origin:

Middle english word "unlicenciat" meaning not granted a license, from un- + licenciat, past participle of licenciare to license.

Examples:

1. He was driving an unlicensed car.
2. I cannot buy cigarettes from an unlicensed vendor.
3. The teacher was unlicensed to teach that subject.
4. He was arrested for operating an unlicensed radio station.
5. It is illegal to sell alcohol from an unlicensed establishment.