Middle English word gad comes from Proto-Indo-European *ǵʰī-, and later Proto-Germanic *gaidō (Prickle; point; ord.)

Detailed word origin of gad

Dictionary entry	Language	Definition
*ǵʰī-	Proto-Indo-European (ine-pro)	to yawn, gape
*ǵʰeh₂-	Proto-Indo-European (ine-pro)
*gaidō	Proto-Germanic (gem-pro)	Prickle; point; ord.
*gaidwą	Proto-Germanic (gem-pro)	Lack; want; shortage; deficiency; need.
gād	Old English (ang)
gad	Middle English (enm)

Words with the same origin as gad