An Etymological Dictionary of the German Language/Annotated/mit

by Friedrich Kluge

mit, preposition and adverb, from the equivalent Middle High German and Old High German mit, preposition, ‘with,’ and the Middle High German adverb mite, Old High German miti; corresponding to Gothic miþ, mid, adverb and preposition, ‘with,’ Anglo-Saxon mid, obsolete in English (except in midwife). Teutonic mid, earlier midi, represents, according to the permutation of consonants, pre-Teutonic miti or meti, and hence is allied to Greek μετὰ, Zend maṭ, ‘with,’ It might also be connected with the cognates discussed under mitz, meaning ‘reciprocal.’