Unless tne is an abbreviation and so it should pass. Names are a common place where people make up weird spellings and so spell checkers are annoying. I have terrible spelling, and yet most of the time I run spellcheck it is tripping up on words that are spelled correct but not in the dictionary (in large part because I run spell check after each revision: words spelled wrong . Add to dictionary means that my dictionary is polluted with words that only apply to one document and would be wrong in the next)