While I agree you shouldn't write "resign" when meaning "re-sign", I believe that's a dictionary-level acceptable spelling Well, yeah, it's in the dictionary, but those two words mean completely different things. As do many other words.http://en.wikipedia.org/wiki/Homograph Many other words are homographs, but resign and re-sign are certainly not because they aren't written the same way. So, no, it's not acceptable (by any definition) because they're both written and pronounced differently.