archrival , also: arch-rival

The win set up a tie against arch rivals Millwall.

They later find out that their fathers are arch rivals.

These arch rivals first met in 1907 and have faced one another annually since 1943.

Turbine reached the final for the first time where they faced their arch rivals 1.

Fortunately, they managed to go 2-0-1 against their arch rivals.

The novel ends with a showdown between the two arch rivals.

His second goal he scored in the away win against arch rivals Ajax.

This allowed Atletico to win the cup and defeat their arch rivals for the first time in 14 years.

So, the President's job has become one of mediating between two parties that need each other but are arch rivals.

India drew the game and the series was shared between the 2 arch rivals.