Another word for achiever

In Joe's eyes, the sun rose and set on his eldest daughter Jen, who was a super achiever, pretty as spring, and a delight to be around.

Harold was a low achiever in mathematics, so his parents hired a tutor for his studies.

The club recognized Suzy for being a high achiever in cookie sales.

It was clear from her application that Amanda was an achiever, so the company readily hired her.

Jim advised his wife to relax instead of constantly striving to be the highest achiever.