invalid
adjective uk/ɪnˈvæl.ɪd/ us/ɪnˈvæl.ɪd/
（文件、票、法律等）无效的，不合法的，官方不承认的
An invalid document, ticket, law, etc. is not legally or officially acceptable.
I'm afraid your driving licence is invalid in Eastern Europe. 恐怕你的驾驶证在东欧无效。
（观点、论点等）站不住脚的
An invalid opinion, argument, etc. is not correct, usually because it is not logical or not based on correct information.
an invalid argument 站不住脚的论点