Norwegian Bokmål

Noun

erkerival m ‎(definite singular erkerivalen, indefinite plural erkerivaler, definite plural erkerivalene)

1. an arch-rival

Norwegian Nynorsk

Etymology

From erke- +‎ rival

Noun

erkerival m ‎(definite singular erkerivalen, indefinite plural erkerivalar, definite plural erkerivalane)

1. an arch-rival