athlete
n. countablen. a person who is very good at sports or physical exercise, especially someone who competes in events.
n. a person who is proficient in sports and other forms of physical exercise, typically competing at a professional or amateur level.
The young athlete trains every morning before school starts.
To become a professional athlete, you must commit to a strict diet and a rigorous daily exercise routine.
While natural talent provides a significant advantage, the most successful athletes are often those who possess the mental discipline to endure years of repetitive and exhausting training.
From Middle English athlete, from Latin āthlēta (and probably also partly from Middle French athlete), from Ancient Greek ἀθλητής (athlētḗs), from ἀθλέω (athléō, “compete for a prize”), from ἆθλον (âthlon, “prize”) or ἆθλος (âthlos, “competition”).