Hebrew

nwp - (hip.) to move to and fro, to brandish (HALOT 682)

PWS
*nwp - to swing (Kogan 2015:566)

The meaning of Akk. nâpu, translated as ‘schwanken’ in AHw. 742, is highly uncertain (cf. CAD N₁ 327) which makes its comparison rather problematic (Kogan 2015:566).