nemisis
Nemesis is a word for arch rival.
nemesis
We play our arch-rival next week!
An arch rival or enemy might be your nemesis.
Enemy or competitor.
nemesis
Nemesis
adversary
enemies
Nemesis is the best choice. Other words could be enemy, adversary.
Arch
Probably the word "Nemesis" is what you are looking for.Nemesis.= (an archenemy)It sounds like the word you're looking for is "nemesis".NEMESISI believe you can call it a "Nemesis"