A.add strength to, strengthen or encourage in a thing, “αὗται [αἱ νέες] . . σφέας ἐπέρρωσαν” Hdt.8.14; “τοὺς μὲν ἐξέπληξε, τοὺς δὲ πολλῷ μᾶλλον ἐπέρρωσεν” Th.4.36, cf. 8.89; “εἰς τὸ ἐπιρρῶσαι αὐτούς” X.HG7.5.6; “ἐ. τινὰ πρὸς τὸν πόλεμον” Plu.Lys. 4; ἐπίρρωσον σαυτήν collect your strength, Luc.Tim.41; ἐ. τὴν γνώμην, τὰ πάθη, Plu.2.62a,681f.
II.. Pass. (in which the pf. ἐπέρρωμαι, plpf. ἐπερρώμην serve as pres. and impf.), fut. “ἐπιρρωσθήσομαι” Luc.Somn. 18: aor. 1 ἐπερρώσθην (v. infr.):—recover strength, pluck up courage, Th.6.93, 7.2; “οἱ Κορίνθιοι . . πολλῷ μᾶλλον ἐπέρρωντο” Id.7.17; ἐς τἆλλα πολὺ ἐπέρρωντο ib.7; “ἐπερρώσθη ἄν τις ἰδών” X.HG3.4.18; “ἐπερρώσθησαν ταῖς ὁρμαῖς πρὸς τὸν πόλεμον” Plb.1.24.1; “τὰς ψυχάς” Hdn.3.3.8; κείνοις . . ἐπερρώσθη λέγειν (impers.) they took courage to speak, S.OC661.