weaken

Universal Words verb 1 to make sb/sth less strong or powerful; to become less strong or powerful: [VN] The team has been weakened by injury. * The new evidence weakens the case against her. * This new story has severely weakened the President's position. * [V] His authority is steadily weakening. OPPSTRENGTHEN 2 to make sb less physically strong; to become less physically strong: [VN] The explosion had weakened the building's foundations. * His health was weakened by overwork. * [V] She felt her legs weaken. 3 to become or make sb become less determined or certain about sth: [VN] Nothing could weaken his resolve to continue. * [V] You must not agree to do it. Don't weaken.