(はっき)

はっき
noun
demonstration, display, exhibition (of ability)
1. demonstration, display, exhibition
The act of fully showing or utilizing one's abilities, skills, or power. Often used with する to form a verb.
She demonstrated her true ability in the match.
He demonstrated leadership and brought the team together.
I was nervous and couldn't demonstrate my true potential.

発揮(はっき)する means to demonstrate, display, or bring out one's abilities or qualities. It implies actively showing what one is capable of.

Common collocations:

Used with できる to express whether one was able to perform at one's best: