arch rival 意味

• 《one's ～》一番｛いちばん｝のライバル、好敵手｛こうてきしゅ｝
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  {名} : <→ARCHRIVAL>
  

例文

1. however , the confrontation with the isshiki clan which was his arch rival in the tango province kept going back and forth , and he finally attacked the isshiki clan being reinforcemed by the asakura clan in the echizen province during the invasion of wakasa by the isshiki clan .
   しかし、宿敵である丹後国一色氏との対立は一進一退の状況が続き、一色氏の若狭侵攻の際には越前国朝倉氏の援軍により、ようやくこれを撃退している。