Şunu aradınız:: billowing (İngilizce - Svahili)

we have prepared a fire for the wrong-doers whose billowing folds encompass them.
hakika sisi tumewaandalia wenye kudhulumu moto ambao utawazunguka kama khema.

or like darkness on a deep ocean covered by waves billowing over waves and overcast with clouds: darkness upon darkness.
au ni kama giza katika bahari kuu, iliyo funikwa na mawimbi juu ya mawimbi, na juu yake yapo mawingu. giza juu ya giza.