adjective
- not known or identified
- not famous or recognized
noun
- a person who is not identified or recognized
- something that is not known or understood
Examples
- The cause of the accident remains unknown.
- An unknown caller left a message on my phone.
- The artist was relatively unknown before winning the award.
- The identity of the witness is unknown to the public.
- Scientists are studying the unknown effects of the new drug.
- The stranger was a complete unknown in our small town.
- Space exploration helps us discover the unknown.