IPA: /səˈpriːmə/
KK: /səˈprimər/
This word describes something that is greater in degree or quality than the highest level or rank.
In this competition, she proved to be the supremer athlete among all participants.
Supremer → It is formed from "supreme" (from Latin *supremus*, meaning highest or utmost) and "-er" (meaning one who). The word "supremer" refers to one who is of the highest rank or status.
Think of someone who is the 'highest' ('supreme') in rank — the '-er' indicates that this person holds that position.