Italian word posta comes from Latin po- (Off, away.), Latin sino, Proto-Italic *posnō

Detailed word origin of posta

Dictionary entry	Language	Definition
po-	Latin (lat)	Off, away.
sino	Latin (lat)	(with accusative of person and infinitive) I let, permit, suffer.. I put, lay, set down.
*posnō	Proto-Italic (itc-pro)
pauso	Latin (lat)	I halt, cease, pause.. I rest in the grave.
positus	Latin (lat)
posta	Italian (ita)	(games) stakes. Mail, post. Post office.

Words with the same origin as posta