verb/afeɡˈtaɾ/
to affect, to have an effect on, to influence; to feign, to affect; to speak or act insincerely, adopt an affectation; to impair, to affect (negatively); to get to, to get under one's skin, to upset, to affect emotionally
“El alcohol puede afectar su juicio.” — Alcohol can impair your judgment.
Borrowed from Latin affectāre. See also the doublets afeitar and ahechar.