vitiate

1. V-T If something is vitiated, its effectiveness is spoiled or weakened. 損害...的效能; 削弱...的效能[正式]

Strategic policy during the War was vitiated because of a sharp division between easterners and westerners. 由于“東方人”和“西方人”間的巨大分歧，戰(zhàn)爭(zhēng)期間的戰(zhàn)略方針沒有得到切實(shí)的執(zhí)行。

But this does not vitiate his scholarship. 但這不會(huì)威脅到他的獎(jiǎng)學(xué)金。