Source : WordNet®

up to now
     adv 1: used in negative statement to describe a situation that has
            existed up to this point or up to the present time;
            "So far he hasn't called"; "the sun isn't up yet"
            [syn: {so far}, {thus far}, {hitherto}, {heretofore},
            {as yet}, {yet}, {til now}, {until now}]
     2: prior to the present time; "no suspect has been found to
        date" [syn: {to date}]