köken: From German Low German achtern (“in the back”) from achter (“behind”), from Middle Low German achter. Equivalent to Old High German aftero, cf. modern German After (“anus”). Cognate also to Dutch achter, achteren; English after. Borrowed to modern standard German only in the context of navigation (otherwise hinten).
köken: Inherited from Proto-Uralic *ponče (“tail”). Older hypotheses have attempted to derive far from Proto-Uralic *pure- (“back, rear”) or Proto-Finno-Ugric *perä (“back, rear”).
stern, poop of a ship · a ship · backside of a person
çekim: çoğul puppēs · tamlayan puppium
köken: Uncertain. Pokorny compares Polish pupa (“bottom, rear”) and Ancient Greek πύματος (púmatos, “the last”), from a common Proto-Indo-European *pu (“turned away”), supposedly from or related to *apó (“away, off”), with uncertainties. (However, Pokorny did not consider that the Greek word could just as well reflect *pó-mn̥tos with Cowgill's law.) More information at Sanskrit पुनर् (púnar). An…