[with obj.](formal)spoil or impair the quality or efficiency of (正式)使变质;使效率降低 development programmes have been vitiated by the rise in population. 人口上升影响了发展计划的效果。 ■destroy or impair the legal validity of 使失去法律效力
派生 vitiation noun vitiator noun 语源
mid 16th cent.: from Latin vitiat- 'impaired', from the verb vitiare, from vitium (see vice)