Prowess (noun)

1. Exceptional skill or ability in a particular activity or field; expertise.
2. Great skill or bravery shown in battle or other dangerous situations.

Origin:

From old french prou "valiant" + -esce "suffix forming nouns of quality".

Examples:

1. He was admired for his athletic prowess.
2. She was known for her prowess as a detective.
3. The team's prowess on the field was unmatched by any other team.
4. His prowess as a chess player was undeniable.
5. The soldier's prowess in battle earned him a medal of honor.