ἀναρμοστία
From LSJ
ἵνα οὖν μηδ' ἐν τούτῳ δῷ αὐτοῖς λαβήν (Photius, Fragments on the Epistle to the Romans 483.26) → so that he doesn't give them even here a handle (= an opportunity for refutation)
English (LSJ)
ἡ,
A discord, of musical sounds, Id.Phd.03c, 03e, al.: metaph., Dam.Pr.341.
German (Pape)
[Seite 205] ἡ, das Nichtzusammenpassen, Unangemessenheit, Ggstz von ἁρμονία, Plat. Phaed. 93 e; neben ἀῤῥυθμία Rep. III, 401 a.
Greek (Liddell-Scott)
ἀναρμοστία: ἡ, παραφωνία, ἐπὶ μουσικῶν ἤχων, ἀντίθετον τῷ ἁρμονία, Πλάτ. Φαίδων 93C, Ε, καὶ ἀλλ.