IPA: /ˈsuːpərfɜːrm/
KK: /ˈsuːpərfɜrm/
A very large and successful business organization that often dominates its industry.
The superfirm has expanded its operations to several countries around the world.
Superfirm → It is formed from "super-" (meaning above or beyond) and "firm" (from Latin "firmus", meaning strong or stable). The word "superfirm" describes something that is exceptionally strong or stable, going beyond the usual firmness.
Think of something that is 'above' ('super-') in strength or stability — that's why superfirm means exceptionally strong.
No commonly confused words.