Excellent (adjective)

1. Very good; of the highest quality.
2. Remarkably good.

Origin:

From middle english, from latin excellēns, excellēnt-, present participle of excellēre ("to excel, surpass"), from ex- ("out") + cellēre ("to be strong, be prominent").

Examples:

1. An excellent opportunity.
2. An excellent performance.
3. The food was excellent.
4. It is an excellent idea.
5. The staff is excellent.