having a very harmful effect on somebody/something, especially in a way that is not easily noticed 有害的,恶性的(尤指潜移默化地) the pernicious influence of TV violence on children 电视暴力对儿童的有害影响 Ageism is equally as offensive and pernicious as sexism. 年龄歧视和性别歧视一样具有攻击性和危害性。
Oxford Collocations DictionaryPernicious is used with these nouns:- influence
- myth
Word Originlate Middle English: from Latin perniciosus ‘destructive’, from pernicies ‘ruin’, based on nex, nec- ‘death’.