Ugaritic

nhmmt - sleep of death; drowsiness (DUL 626)

this attestation of *nwm doubtful. Gordon 422 and Del Olmo, Mitos 588 regard the word as a compositum consisting of nhm ‘sleep’ (with an inserted -h-) and mt ‘death’ (otherwise in [WUS 90]).

PS
*nwm - to sleep, slumber (SED I No. 52ᵥ)
level?