weakener

• n.weaken的变形

weaken['wi:kən]

• vt.
  • (使)变弱；(使)变衰弱：

    The flood weakened the dam.

    洪水损坏了大坝。

  • (使)变稀薄：

    Mother weakened the liquid medicine for her baby by adding water.

    妈妈给宝宝冲淡了药水。

• vi.
  • 变弱，变衰弱：

    He weakened as the illness grew worse.

    由于病的加重使他变得虚弱了。

  • 畏缩：

    The enemy weakened in face of our attacks.

    面对我们的进攻，敌人畏缩了。

  • 【语音学】弱化
• 近义词:

  debilitate.enervate.undermine.sap

• 反义词:

  strengthen.energize