hith·er·to I. \ˈ ̷ ̷ ̷ ̷ˌtü, ˌ ̷ ̷ ̷ ̷ˈ ̷ ̷\adverb Etymology: Middle English hiderto, from hider (adverb) + to (preposition) 1.: up to this time : as yet : until now < hitherto unknown resources > 2.: to this place < the appointed delegates shall come hitherto > II. adjective : existing or done hitherto : previous, prior < our hitherto experience suggests >