Original (adjective)

1. existing at the beginning of a particular process or period in history; first.
2. Not a copy; unique.

Origin:

Late middle english: from latin originalis, from originem (see origin).

Examples:

1. The original painting is in a museum.
2. He is the original creator of the character.
3. The original plan was to build a bridge but it was changed to a tunnel.
4. This is the original document, the copy is not valid.
5. He is an original thinker and not afraid to challenge the status quo.