invalidate
verbVerb Forms
| present simple I / you / we / they invalidate | |
| he / she / it invalidates | |
| past simple invalidated | |
| past participle invalidated | |
| -ing form invalidating |
- invalidate something
to prove that an idea, a story, an argument, etc. is wrong 证明…错误；使站不住脚 This new piece of evidence invalidates his version of events. 这条新证据推翻了他对事件经过的说法。 Flawed research methods may invalidate the study’s conclusions. 错误的研究方法可能会使得研究结论站不住脚。
- invalidate something
if you invalidate a document, a contract, an election, etc., you make it no longer legally or officially acceptable 使无效；使作废 Misuse of the mattress will invalidate the guarantee 床垫因使用不当造成的损坏不予保修。
Word Originmid 17th cent.: from medieval Latin invalidat- ‘annulled’, from the verb invalidare (based on Latin validus ‘strong’).