Derived words: napšaštu (napšaltu) ‘ointment, salve’ (CAD N₁ 317, AHw. 741); paššu ‘anointed’ (CAD P 259); piššatu, piššetu ‘ointment’ (CAD P 430, AHw. 869); pušištu (pušiltu) ‘malt residue’ (CAD P 542, AHw. 1583).
In view of the consistent spellings with ŠV signs in Ebla, the etymological source of pašāšu can be confidently fixed as *pṯṯ. No reliable cognates with this phonetic shape have been detected.
A comparison with Modern Ethiopian *fss ‘to spill, to pour’ is possible.