あだ

仇

  1. noun (common) (futsuumeishi)

    foe, enemy, rival

  2. noun (common) (futsuumeishi)

    resentment, enmity, grudge

  3. noun (common) (futsuumeishi)

    harm, injury

    • せっかくの苦労もあだになった。
      All my pains went for nothing.