IPA: /ˈsuːpərˌæθliːt/
KK: /ˈsuːpərˌæθlit/
A person who is extremely talented and successful in sports or physical activities.
The superathlete broke several records during the championship.
Superathlete → It is formed from "super-" (meaning above or beyond) and "athlete" (from Greek "athlētēs", meaning one who competes for a prize). The word "superathlete" refers to an athlete who excels beyond the usual level of performance or ability.
Think of someone who is 'above' ('super-') the normal level of competition ('athlete') — that's why a superathlete is someone who excels in sports.
No commonly confused words.