achiever
Definitions
A person who works hard and succeeds in their endeavors.
Someone who reaches a high level of performance or accomplishment.
Examples
She has always been a high achiever, consistently ranking at the top of her class.
The company culture rewards every achiever with opportunities for rapid career advancement.
Synonyms
high performer go-getter success story top performer high achiever winner striver
Antonyms
underachiever slacker failure loafer non-achiever lazy person quitter