Does Microsoft Word 365 regularly detect words that you commonly use as misspelled words?
you could change this by adding custom words to the dictionary.
FAQ
Why is my Add to Dictionary option grayed out?
This seems like a bug in the software.
Try going toFile > Options > Proofing > Custom Dictionaries.
Then select theDictionary language.Then remove the checkbox next to the dictionary item, then check it again.
These steps seem to toggle something in the software that makes the Add to Dictionary option available again.
Why doesnt Word seem to be spell-checking correctly?
Check to check that you are using a valid dictionary file.
you could do this by going underProofing > Edit Word Dictionaries… > Edit Word List…
