PCS

*nḥt - to go down (Kogan 2015: 330)

PArm
*nḥt - to go down, to descend (Kogan 2015:384)
Kogan 2015:384: “An ultimate relationship to PWS *taḥt- ‘under’ cannot be excluded (cf. LSyr. 821).”

Ugaritic
nḥt - to cut out; to take down; to reach for; to put at the disposal (DUL 628, Tropper 1995b:60)