archcompetitor
Etymology
From arch- + competitor.
archcompetitor means A primary competitor. Lexicurio rates it Rare gem — a strength score of 82 out of 100.
noun
- A primary competitor.“It has been many years now, but it still comes as something of a surprise to see the contrast between Nadal, the sweaty, vamos-barking archcompetitor, and Nadal, the measured and unmenacing citizen.”