ἀντιχρηματίζομαι
From LSJ
Νέµουσι δ' οἴκους καὶ τὰ ναυστολούµενα ἔσω δόµων σῴζουσιν, οὐδ' ἐρηµίᾳ γυναικὸς οἶκος εὐπινὴς οὐδ' ὄλβιος → They manage households, and save what is brought by sea within the home, and no house deprived of a woman can be tidy and prosperous
English (LSJ)
transact business instead of another, PFlor.382.59 (iii A.D.).
Spanish (DGE)
actuar en nombre de otro, representar, PMich.529ue.49 (III d.C.), cf. PFlor.382.59 (III d.C.).