Synonyms for Up To Now (same or very similar meaning)
WordNet sense 1 (prior to the present time):
to dateWordNet sense 2 (used in negative statement to describe a situation that has existed up to this point or up to the present time):
heretofore, hitherto, yet, so far, as yet, thus far, til now, until nowFrom the ODE community, based on WordNetadd/edit