柯林斯詞典invalidate /?n?v?l??de?t/ (invalidating,invalidated,invalidates) 1. V-T If something invalidates something such as a law, contract, or election, it causes it to be considered illegal. 使無傚 An official decree invalidated the vote in the capital. 一項官方法令使首都的投票失去了傚力。 返回 invalidate劍橋詞典to officially stop a document , ticket , law , etc. being legally or officially acceptable 使無傚；使作廢 to prove that an opinion , argument , etc. is wrong 証明（觀點、論點等）錯誤 返回 invalidate