ὄψ · ops — LSJ
voice
voice, whether in speaking, shouting, lamenting, Ἀτρείδεω ὀπὸς ἔκλυον Il. 16.76, cf. 14.150, 18.222, 22.451, etc.; or in singing, Κίρκης . . ἀειδούσης ὀπὶ καλῇ Od. 10.221, cf. 5.61; ἄειδον ἀμειβόμεναι ὀπὶ καλῇ Il. 1.604, cf. Hes. Th. 41, al., Pi. N. 7.84, al., B. 16.129, A. Supp. 60 (lyr.), etc.; also of cicadae, ὄπα λειριόεσσαν ἱεῖσι Il. 3.152; of lambs, ἀκούουσαι ὄπα ἀρνῶν 4.435; of flutes, αὐλῶν φθεγγομένων ἱμερόεσσαν ὄπα Thgn. 532.
II word
word, ὡς γὰρ ἐγὼν ὄπʼ ἄκουσα θεῶν Il. 7.53; ἀμείλικτον δʼ ὄπʼ ἄκουσαν 11.137, cf. 21.98, S. El. 1068 (lyr.), etc. (Cogn. with ἔπος, εἰπεῖν.)