I've got a strange issue with MS Word that I'm hoping someone can help me fix. I have a list of words with some that are misspelled, and I'm hoping to have MS Word automatically pick up on these misspelled words. For some reason, spell check doesn't seem to pick up the misspelled words. I have to manually add a space behind each word for spell check to notice it, and this "sometimes" work and sometimes not. For some words, I would manually add a space and MS word wouldn't pick up on it (eg. "iii"), even though in a new blank document, spellcheck would pick up on the exact same word. I provide an image sample of the list below. I thought it may be something to do with text formatting, so I tried to copy the list into excel/ notepad and copy the text back into a new MS Word, but would still have the problem of spell check not picking up on it.
*Sample image below

I want spellcheck to automatically pick up on these misspelled words because I hope to run a batch delete macro that deletes all misspelled words from the list. There are hundreds of documents, each document having thousands of pages, so automation is important. How can I get spellcheck to pick up on all misspelled words? Why is spellcheck only randomly picking up some words? Acknowledging that latin words may be a factor, but if so, why is it sometimes deeming eg. iii to be misspelled and other times not? And if latin words is a factor, is there a way for MS Word spellcheck to deem all latin words as misspelled? For context, this list of words is copied from a pdf file that's been converted to word text with OCR. Thanks for any help!