An Etymological Dictionary of the German Language/Annotated/männiglich
Appearance
männiglich, pronoun ‘everybody,’ from Middle High German manne-gelîch, menneclîch, ‘every’; literally manne gelîch, Old High German manno glîh, ‘each of men,’ whence Old High German manniclîch and mannolîch, ‘every, each.’ Similarly täglich is based on Old High German tagogilîh, ‘every day.’ Old High German gilîh, ‘every,’ is identical with gleich.