"hither" and "thither" still survive a little bit in the phrase "hither, thither, and yon" - with yon being a word meaning of "far away but generally still within eyesight"; truly a delightful concept to have a word for. sadly while "yon" gives us the direction-to version ("yonder") there is no coming-from version, as "yonence" is not a word. this is because we are COWARDS