Weaken
Weaken , transitive verb
1.
To make weak; to lessen the strength of; to deprive of strength; to debilitate; to enfeeble; to enervate; as, to weaken the body or the mind; to weaken the hands of a magistrate; to weaken the force of an objection or an argument.
Their hands shall be weakened from the work, that it be not done.
2.
To reduce in quality, strength, or spirit; as, to weaken tea; to weaken any solution or decoction.
Weaken , intransitive verb
To become weak or weaker; to lose strength, spirit, or determination; to become less positive or resolute; as, the patient weakened; the witness weakened on cross-examination.
His notion weakens, his discernings are lethargied.