invalid

1. N-COUNT An invalid is someone who needs to be cared for because they have an illness or disability. 病人; 残疾人

I hate being treated as an invalid. 我讨厌被当作病人对待。

2. ADJ If an action, procedure, or document is invalid, it cannot be accepted, because it breaks the law or some official rule. 无效的

The trial was stopped and the results declared invalid. 审判被终止了，其结果被宣布无效。

3. ADJ An invalid argument or conclusion is wrong because it is based on a mistake. 站不住脚的

We think that those arguments are rendered invalid by the facts. 我们认为那些论点在事实面前站不住脚。