You can stop Microsoft Word Dictate from automatically inserting the word Open, Hey, Hello or What every time by following these suggestions.

If you aren't using voice dictation in Microsoft Word, you're sleeping on one of its best features. It transforms how you interact with the document with hands-free typing, editing, and formatting.

Learn how to Turn On or Off the Profanity Filter in Microsoft Word, Dictate feature. You can disable Word censorship by following this post.