IPA: /səˈpɜːrbnəs/
KK: /səˈpɜrbnəs/
The quality of being excellent or outstanding.
The superbness of the performance left the audience in awe.
Superbness → It is formed from "superb" (from Latin *superbus*, meaning proud or magnificent) and "-ness" (a suffix used to form nouns indicating a state or quality). The word "superbness" refers to the state or quality of being superb or magnificent.
Think of 'superb' meaning magnificent, and remember that 'superbness' describes the quality of being magnificent.