[feisuzhu]

(ab)?using ?

[kaeruct]

Using. But also maybe abusing.

[carlosneves]

I think he's proposing a fix for the regex in the title.

/(ab?)using/ matches:

- ausing

- abusing

while /(ab)?using/ matches:

- using

- abusing

[sbjs]

It's English, it just looks like regex. In English, the ? belongs inside the parens in this case.