One-on-one (adjective)

1. Relating to or involving only two people and no one else.
2. Relating to or involving direct interaction between two people without intermediaries.

Origin:

Phrase meaning 'one person to another' or 'one person and another person', formed from the words one, on, and one.

Examples:

1. She needed a one-on-one meeting with her manager to discuss her performance.
2. The one-on-one coaching session helped him improve his skills.
3. The one-on-one conversation with the doctor was confidential and private.
4. The one-on-one tutorial was more effective than a group lesson.
5. The one-on-one negotiation was successful and both parties were satisfied.