transitive & intransitive verb . To make or become weak or weaker.

To become weak or weaker: as, he weakens from day to day.

To make weak or weaker; lesson or reduce the strength, power, ability, influence, or quality of: as, to weaken the body or the mind; to weaken a solution or infusion by dilution; to weaken the force of an argument.

intransitive verb. To become weak or weaker; to lose strength, spirit, or determination; to become less positive or resolute.

transitive verb. To make weak; to lessen the strength of; to deprive of strength; to debilitate; to enfeeble; to enervate.

transitive verb. To reduce in quality, strength, or spirit.

verb. To make weaker.

verb. To become weaker.

verb. become weaker

verb. destroy property or hinder normal operations

verb. reduce the level or intensity or size or scope of

verb. lessen in force or effect

verb. lessen the strength of