Jamieson, Fausset and Brown on Nahum 2:10

10. Literally, "emptiness, and emptiedness, and devastation." The accumulation of substantives without a verb (as in Na 3:2), the two first of the three being derivatives of the same root, and like in sound, and the number of syllables in them increasing in a kind of climax, intensify the gloomy effectiveness of the expression. Hebrew, Bukah, Mebukah, Mebullakah (compare Is 24:1, 3, 4; Zep 1:15).

faces of all gather blackness--(See on Joe 2:6). Calvin translates, "withdraw (literally, 'gather up') their glow," or flush, that is, grow pale. This is probably the better rendering. So Maurer.