IPA: //ˈsuːpərˌseɪlzˌmæn//
KK: /ˈsupərˌseɪlzˌmæn/
A person who is extremely skilled or successful in selling products or services.
He was known as a supersalesman, consistently exceeding his sales targets.
Supersalesman → It is formed from "super-" (meaning above or beyond) and "salesman" (from Old English "sale" meaning transaction and "man" meaning person). The word "supersalesman" refers to a person who excels or goes beyond the usual level in sales.
Think of someone who is 'above' ('super-') the average in making 'transactions' ('salesman') — that's why a supersalesman is an exceptional salesperson.
No commonly confused words.