PCS

*nbg - to spring up (Kogan 2015: 299)

PC
*nabk- - spring, stream (HALOT 663, Kogan 2015: 299)
with word-final devoicing *g > k

Jewish Babylonian Aramaic
nbg - to break forth (DJBA 725)
Syriac
nbg - to gush out, burst forth (LSyr. 410, SL 882)
Mandaic
nbg - to (a)rise, spring up (MD 287)
Arabic
nbǯ - to go out (a partridge from its den) (TA 6 229)