μεσιδιόω
From LSJ
Ζῆν οὐκ ἄξιος, ὅτῳ μηδὲ εἷς ἐστι χρηστὸς φίλος → Life is not worth living if you do not have at least one friend.
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.