One-man (adjective)

Designed or done by one person alone, or controlled by one person.

Origin:

Late 19th century: from one + man.

Examples:

1. He set up a one-man business selling handmade crafts.
2. The play was a one-man show, with the actor playing multiple characters.
3. He designed and built the machine himself, so it was a true one-man operation.
4. She performed the entire concert as a one-woman band.
5. The company was a one-man shop, with the owner doing everything from accounting to sales.