μεσιδιόω
From LSJ
Δόλιον γὰρ ἄνδρα φεῦγε παρ' ὅλον τὸν βίον → Dum vivis, insidiosos curriculo fuge → Den Hinterhältigen fliehe, dein ganzes Leben lang
English (LSJ)
A deposit with a neutral party or trustee, χειρόγραφόν τινι PRein.7.22 (ii B. C.):—Pass., ib. 32, SIG633.87 (Milet., ii B. C., written μεσειδ-): condemned by Phryn.98.