1. (adverb)so far, thus far, up to now, hitherto, heretofore, as yet, yet, til now, until now used in negative statement to describe a situation that has existed up to this point or up to the present time Synonyms: yet, insofar, withal, to that degree, so far, in so far, nonetheless, up to now, til now, still, to that extent, until now, thus far, notwithstanding, however, all the same, nevertheless, hitherto, as yet, in time, even, to date, heretofore, even so
Synonyms, Thesaurus & Antonyms of 'hitherto'
English Synonyms and Antonyms
1. hitherto Yet and still have many closely related senses, and, with verbs of past time, are often interchangeable; we may say "while he was yet a child," or "while he was still a child." Yet, like s Synonyms: yet, besides, further, hitherto, now, still, thus far
Synonyms for hitherto 
