The term 'now (so far)' can be expressed in three different ways: 'UNTIL' (5 letters), 'asof' (4 letters), and 'upto' (4 letters). 'UNTIL' is a preposition that indicates a point in time or an event that marks the end of something. 'Asof' is an adverb that means up to and including the present or a specified time. 'Upto' is a preposition that means up to a certain point in time or a certain event. All three terms refer to the same concept, which is the current moment or a point in time up to the present.