Up to now (6)
'up to now' is the definition.
(I know that up to now can be written as so far)
This is the entire clue.
(Other definitions for so far that I've seen before include "to a certain degree" , "till now" , "To this point" , "Up until the present moment" .)
'up to now' is the definition.
(both can mean until the present time)
This is all the clue.
(Other definitions for as yet that I've seen before include "Up to this point in time" , "Thus far" , "Up till now" .)
'up to now' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for yet that I've seen before include "Still; however" , "Though; still" , "Up to the present time" , "Up to this time and continuing" , "in spite of that" .)
(Other definitions for hereto that I've seen before include "To this place (law)" , "Attached to this document, legal term" , "To this place or time" , "In this direction" , "To this document, in legal jargon" .)
'up to now' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for hitherto that I've seen before include "Up to this time" , "Heretofore (8" , "So far" , "Up to this point" , "Up till now" .)