Etymology tree
Proto-Indo-European *(s)meh₂-der.
Proto-Italic *manus
Proto-Indo-European *dʰeh₁-
Proto-Indo-European *dʰéh₁tder.
Proto-Italic *-ðō
Proto-Italic *manuðō
Latin mando
From Proto-Italic *manuðō, which also has reflexes in Oscan, albeit with a change of conjugation class in Latin. Equivalent to manus (“hand”) + -dō (“put”).