ἠχικός
From LSJ
νοεῖν γάρ ἐστι κρεῖττον καὶ σιγὴν ἔχειν → it's better, you see, to understand and yet say nothing (Menander)
English (LSJ)
ή, όν, (ἦχος)
A = ἠχητικός, of Alcaeus, ἠ. Αἰολίδης, i.e. singing in Aeolic, Epigr. ap. Sch.Pi.O.p.10D.
German (Pape)
[Seite 1180] = ἠχετικός, Welck. syll. epigr. 236, 4.