συμπληθύνω
From LSJ
ἄνω ποταμῶν ἱερῶν χωροῦσι παγαί → the springs of sacred rivers flow upward, backward to their sources flow the streams of holy rivers
English (LSJ)
[ῡ],
A help to increase, X.Oec.18.2. 2 Pass., to be multiplied as well as, c. dat., Procl.in Prm.p.546S. II give plural form to as well, σ. τῷ ὀνόματι τὸ ἄρθρον A.D.Synt.54.17:— Pass., take plural forms, ib.205.1.
German (Pape)
[Seite 988] = Folgdm, Xen. Oec. 18, 2.