難なん敵てき

noun

formidable enemy; tough opponent

Refers to a difficult adversary in competition, battle, or any challenging situation. Often used in sports, games, or metaphorical contexts.

• 次つぎの試し合あいの相あい手ては難なん敵てきだ。

  Our next opponent is a formidable enemy.

• この問もん題だいは我われ々われにとって難なん敵てきだった。

  This problem was a tough opponent for us.