προσψιθυρίζω
From LSJ
συνερκτικός γάρ ἐστι καὶ περαντικός, καὶ γνωμοτυπικὸς καὶ σαφὴς καὶ κρουστικός, καταληπτικός τ' ἄριστα τοῦ θορυβητικοῦ → he's intimidative, penetrative, aphoristically originative, clear and aggressive, and superlatively terminative of the obstreperative
English (LSJ)
A whisper, chirp, whistle to, τί τινι AP5.151 (Mel.), cf. Plu.2.505c, Porph.VP24.
German (Pape)
[Seite 789] zuflüstern, zuzischeln, Meleag. 90 (V, 152). zuflüstern, zuzischeln, Meleag. 90 (V, 152).