weaken

动词 weaken:

1. lessen the strength of
2. become weaker
3. destroy property or hinder normal operations
   同义词：sabotage, undermine, countermine, counteract, subvert
4. reduce the level or intensity or size or scope of
   同义词：de-escalate, step down
5. lessen in force or effect
   同义词：dampen, damp, soften, break

1. Hunger and disease had weakened his constitution.
   他饥饿与疾病交加，体质已削弱。
2. She weakened as the illness grew worse.
   随着病情加重，她的身体日渐衰弱。
3. These internal disputes have weakened the party's power.
   这些内部纠纷削弱了这个政党的力量。
4. Nothing can weaken his resolve to become a lawyer.
   什么也动摇不了他要当律师的决心。

weak.en

v.tr.intr.（及物动词和不及物动词）
weak.ened,weak.en.ing,weak.ens
To make or become weak or weaker.
使虚弱：使或成为虚弱或更弱

【引伸】
weak.ener
n.（名词）