IPA: //ˈsuːpərˌstɑːrdəm//
KK: /ˈsuːpərˌstɑrdəm/
The state of being a very famous and successful person, especially in entertainment or sports.
After her hit movie, she quickly rose to super stardom and became a household name.
Superstardom → It is formed from "super-" (meaning above or beyond) and "star" (from Old English "steorra", meaning celestial body or star) and "-dom" (meaning state or condition). The word refers to the state of being a star that is above or beyond others in fame or success.
Think of someone who is a 'star' ('steorra') in a 'state' ('-dom') of being 'above' ('super-') all others — that's what superstardom means.
No commonly confused words.