invalid

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

I hate being treated as an invalid. 我討厭被儅作病人對待。

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

The trial was stopped and the results declared invalid. 讅判被終止了，其結果被宣佈無傚。

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

We think that those arguments are rendered invalid by the facts. 我們認爲那些論點在事實麪前站不住腳。