You can add those terms to the current 2010 dictionary by going to "FILE / OPTIONS / PROOFING / Custom Dictionaries...".



This link may help you: http://www.wikihow.com/Add-a-Word-to...Microsoft-Word.

This does not work with the double-word check since the single word is spelled correctly. I also tried it with a non-breaking space but that made no difference.

My go-to page for spelling utility issues in Word is Mastering the Spelling Checker by Suzanne Barnhill.