Ignore all in Word Editor

Hi Hebephrene,

let me try answer your questions:

1. It’s possible that Word is adding more errors as you eliminate them because it’s detecting new errors that were previously hidden. For example, if you correct a sentence fragment, Word may detect a new error in the same sentence. Additionally, Word may be detecting errors in other parts of the document that you haven’t reviewed yet.
   
   

2. If you choose “ignore all” when confronted with a participle like “the boy stood his ground, hoping not to be…” rather than he hoped etc., Word will ignore all instances of that particular configuration where the word “hoping” is used. However, it’s important to note that this will only apply to the current document. If you open a new document, you will need to ignore the participle again.
   
   

3. If you use “ignore once” when working with a large document with over a thousand errors, you can save those changes by clicking on the “File” tab and selecting “Options”. In the “Proofing” section, click on “Custom Dictionaries” and then “Edit Word List”. Here, you can add words that you want Word to ignore. Once you’ve added all the words you want to ignore, click “OK” to save your changes. When you close and then reopen the document, Word will no longer flag those words as errors.

Check grammar, spelling, and more in Word - Microsoft Support

MS word suddenly marking words as spelling errors even though they're - Microsoft Community