impair

/im-ˈper/

Middle English empeiren, from Anglo-French empeirer, from Vulgar Latin *impejorare, from Latin in- + Late Latin pejorare to make worse

verb

  1. to diminish in function, ability, or quality : to weaken or make worse

It has been known for nearly 100 years that memory is impaired by bilateral damage to either of two brain regions …

injure harm hurt damage impair mar mean to affect injuriously. injure implies the inflicting of anything detrimental to one's looks, comfort, health, or success. harm often stresses the inflicting of pain, suffering, or loss.