[Daneel_]

How so?

Start of line “^”, then an “n”, then any word characters zero or more times (\w*), then a “g”, then the end of the line “$”. The surrounding slashes are convention for certain regex languages, and the last “i” turns on the case insensitive flag.

Personally I’d write this as “(?i)\bn[a-z]*g\b” but there’s many approaches for many different situations.

[ukd1]

I assume mostly using start of line instead of \b, and expecting w only to be zero+ times in the middle.

[y4mi]

Because i struggled to understand what you meant I'd like to rephrase it:

It matches only if the regex is applied to a singular word. It's not going to match if there is a sentence or any apostrophe etc, which is implied to be valid input because it supposedly matches "all words".

[Filligree]

That’s easy to misunderstand. And if humans have trouble with it, then I won’t blame the poor AI.

Getting an AI to ask clarifying questions would be useful, of course…

[OscarDC]

I guess it doesn't work for example when words contain dashe(s) or apostrophe(s) which might exist (for a single indivisible word) in some languages.