This regex (?<!not)s(helloW*world) will not match when hello world is preceded by not word.

How do I make it not match too when there’s a word in between: not a hello world?

I’m trying this regex (?<!not)(?:s+.*)?s(helloW*world) with the (?:s+.*)? to make the in-between word optional but doesn’t seem to work.

https://regex101.com/r/HPcJ9F/1