ἰσχνόφωνος
From LSJ
Βλάπτει τὸν ἄνδρα θυμὸς εἰς ὀργὴν πεσών → Nociva res est animus irae traditus → Es schadet, wenn des Mannes Sinn dem Zorn verfällt
English (LSJ)
ον,
A thin-voiced, weak-voiced, Phld. Po.2.25, Gal.17(1).186; of Isocrates, Plu.2.837a; of partridges, Antig.Mir.6; but, II having an impediment in one's speech (connected by the Greeks with ἴσχω), οἱ ἰ. . . ἴσχονται τοῦ φωνεῖν Arist.Pr.903a38, cf. 895a15, 905a21, AB100; ἰ. καὶ τραυλός Hdt.4.155, cf. Hp.Epid.1.19; ἰ. καὶ βραδύγλωσσος LXXEx.4.10, cf. Ezek. Exag.114; also of metals, etc., χρυσὸς καὶ λίθος ὑπὸ πληρότητος ἰ. καὶ δυσηχῆ Plu.2.721c: metaph., ἡ φιλία ἰ. γέγονεν ἐν τῷ παρρησιάζεσθαι ib.89b. Adv. -φώνως Zos.Alch.p.108B.