Derived words: napalsuḫtu, napalsaḫtu, napalsiḫtu ‘footstool, stooľ (CAD N₁ 271, AHw. 733).
Ugr. prsḥ ‘to collapse’ comes remarkably close to the Akkadian verb in both form and meaning. Also cf. Tna. färšäḥe ‘to destroy, to collapse; to knock down’, Ar. farsaḫa ‘to decrease (of cold)’.