Entry Word: hitherto

Function: adverb

Meaning: up to this or that time <at the talent show Kyle revealed his hitherto unknown gift for doing impressions>

Synonyms heretofore, theretofore, thus far, yet

Related Words before, formerly, previously

Near Antonyms afterward (or afterwards), later, subsequently; hereupon, thereupon

Antonyms henceforth, henceforward, hereafter, thenceforth, thenceforward (also thenceforwards), thereafter