Where does “glīġ” come from?

glīġ (Old English) comes from Proto-Germanic glīwą, from Proto-Indo-European gʰlew-, from Proto-Indo-European gʰel- — to call; to chant; to shout.

Ancestry of “glīġ”, step by step

Step	Language	Word	Meaning
1	Proto-Germanic	glīwą	joy, gladness, merriment, mirth
2	Proto-Indo-European	gʰlew-	to be glad; jest; joke; to joke, make fun, enjoy;...
3	Proto-Indo-European	gʰel-	to call; to chant; to shout

glīġ — Etymology, Origin & Word History | Etymology Explorer