the word 'thither' originates from the old english 'þider', a variant of 'þæder', meaning "to that place." it is related to the demonstrative pronoun 'that' and shares a common proto-germanic root with its counterparts 'hither' (to here) and 'whither' (to where). these directional adverbs form a complete set in older english, with 'thither' specifically denoting motion toward a point away from the speaker. over time, its usage has become largely archaic or formal, largely replaced in everyday speech by the simpler phrase "to there."

this is a simplex word of old english origin. it is not productively formed from separable morphemes in modern english.