Unusual (adjective)

1. Not habitually or commonly occurring or done.
2. Remarkable or interesting because different from or better than others.

Origin:

Middle english from old french unusual from latin unusualis not used, from un- + usus use.

Examples:

1. He was an unusual person, in that he didn't like talking about himself.
2. It is unusual for the sky to be this dark in the middle of the day.
3. She had an unusual name that not many people knew how to pronounce.
4. He had an unusual talent for playing the guitar with his teeth.
5. The painting was unusual in that it was created using only three colors.