Akkadian

azû - to produce unnatural sounds (CAD A₂ 528, AHw. 92)

Var. ḫazû, asû.
In AHw. 92 translated as ‘seufzen, jappen’.

PS
*hḏy/w - to be mad, talk without sense; produce incoherent sounds (in one’s sleep) (SED I No. 18ᵥ)