אֲפֵלָה

From LSJ

ᾁδειν ἀμουσότερα Λειβηθρίων → sing worse than Leibethrans, sing worse than the people of Leibethra

Source

English (Strong)

feminine of אָפֵל; duskiness, figuratively, misfortune; concrete, concealment: dark, darkness, gloominess, X thick.