ὑπολαλέω
From LSJ
τὸν αὐτὸν ἔρανον ἀποδοῦναι → pay him back in his own coin, repay him in his own coin, pay someone back in their own coin, pay back in someone's own coin, give tit for tat, pay back in kind
English (LSJ)
A whisper, τινί τι Apollod.Poliorc.137.4.
German (Pape)
[Seite 1222] heimlich schwatzen, flüstern, Hesych. erkl. ψιθυρίζω.
Greek (Liddell-Scott)
ὑπολᾰλέω: λαλῶ χαμηλοφώνως, Γρηγ. Νύσσ. τ. 2, σ. 553D. 2) ψιθυρίζω, τινί τι Ἀρχ. Μαθημ. 13, κλπ. ΙΙ. λέγω πλαγίως, «βούλεται δὲ μᾶλλον ὑπολαλεῖν τῷ τολμῶντι τὸ χρῆναι αὐτὸν πρὸς ἑαυτῷ ἔχειν τὸν νοῦν καὶ ἢ αἰδεῖσθαι ἢ φοβεῖσθαι» Εὐστ. Πονημάτ. 48. 59.