Remove word that ends with a period

Question

I'm trying to use regex to remove a word that ends with a period.

I want to only remove Ep. as a whole word, but not if it's part of another word.

Also I will use RegexOptions.IgnoreCase.

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This Ep. is 01. TestEp.01Test.

Should be:

This is 01. TestEp.01Test.

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I thought it should be \b(Ep\.)\b but it doesn't work.

https://regex101.com/r/QcOiMR/2/

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I have tried https://stackoverflow.com/a/5696940/6806643

Answer 1

It should be \b(Ep\.)\B, because the period is not a "word" character but a "non-word" character and as such, you need a "non-word boundary" (\B) and not a "word boundary" (\b).