IPA: //ˈsuːpərˌθrɪlər//
KK: /ˈsuːpərˌθrɪlər/
A type of story that is very exciting and intense, often involving crime or suspense, and is considered to be more thrilling than a regular thriller.
The new movie is a superthriller that keeps you on the edge of your seat from start to finish.
Superthriller → It is formed from "super-" (meaning above or beyond) and "thriller" (from the verb "thrill", meaning to cause excitement or suspense). The word "superthriller" refers to a work that goes beyond the usual excitement or suspense found in typical thrillers.
Think of something that is 'above' ('super-') the usual excitement of a 'thriller' — that's why a superthriller is an exceptionally thrilling story.
No commonly confused words.