Substantiv
archenemy [pl. archenemies]
...
vehement disputer {violent, fierce, tough}
Adjektiv
bitter [ bitterer/more bitter ; bitterest/most bitter]
irreconcilable [ more irreconcilable ; most irreconcilable]
relevante Treffer
archenemy (n.) , {Relig.}
Satan (n.) , {Relig.}