Dynamic Word autocomplete or autosuggest in VBA?

Has anyone come across a VBA (or other) program for implementing dynamic autocomplete in Word? Emacs开发者_高级运维 has had this for decades, and it would be great to have it in Word. I see others in this forum are looking for code for Android, so this topic isn't completely obscure. It would be great to type ac* - and get Word to fill in "across" based on previous text.

Seemingly both Openoffice and MS Office has some sort of Auto-complete. I don't often use word processor though, but I hope it helps.