莫须有的英文：
[Literal Meaning]
perhaps/have
There might be a crime.

[解释]
事实上并不存在、凭空捏造的。

[Explanation]
groundless or fabricated (accusation)

[例子]
你对我泄密的指责都是莫须有的，我根本没有看过那份保密文件。

[Example]
Your criticism about my divulgence of secret was all groundless. I had never seen that classified document.

[英文等价词]
baseless

After this, the phrase mo'xu'you entered the Chinese language to mean a trumped-up charge
“莫须有”即“也许有”的意思。