A family of Microsoft word processing software products for creating web, email, and print documents.
This is how I solved the problem:
Go to File, Options, Proofing and click on Custom Dictionaries. Then pick the dictionary language. Then you will see your language in the list with a checked box next to it. Remove the check and check it again. Then click OK and OK. And hopefully your problem will be solved.
This worked for me, I hope works for you too.