manus.

From Proto-Italic *manus, further etymology is disputed. Possible cognates include Proto-Germanic *mundō (> Old English mund (“hand, hand of protection, protector”), whence modern English mound), Ancient Greek μάρη (márē, “hand”) (a hapax legomenon of dubious authenticity) and Hittite [script needed] (manii̯aḫḫ-ⁱ, “to distribute, entrust”). Proposals for further etymology include: * a Proto-Indo-European *méh₂-r̥ ~ *mh₂-én-, from *(s)meh₂- (“to beckon, signal”), favoured by Mallory and D. Q. Adams * a Proto-Indo-European *mon-u-, with a later change from mo- to ma- in an open syllable, possibly connected to Old Irish muin (“protection”) too, favoured by Schrijver and De Vaan (although De Vaan finds the Irish term semantically difficult).

From Proto-Indo-European *meh₂-no- (“good”), from *meh₂- (“timely, opportune”). Compare immānis (“vast, monstrous”), Old Irish maith (“good”), Welsh mad (“id”), Breton mat (“id”), as well as English matins and mature.