1. to make or become less strong, powerful, or effective
Usage: third person singular present tense of ‘weaken’

Examples

• The storm weakens as it moves inland.
• Lack of sleep weakens your immune system.
• The scandal weakens the politician’s chances of reelection.
• Age gradually weakens the muscles.
• The constant rain weakens the foundation of the building.
• His argument weakens when he provides no evidence.
• The medication weakens the virus’s ability to spread.