勁けい敵てき

noun

formidable foe; powerful enemy

A strong or tough opponent. This is a literary and somewhat archaic term; in modern Japanese, 強敵 (きょうてき) is far more common.

• 彼かれは生しょう涯がいで最もっとも手て強ごわい勁けい敵てきと対たい峙じした。

  He faced the most formidable foe of his life.