Where does “geason” come from?

geason (English) comes from Middle English geson, from Old English gǣsne, from Proto-West Germanic *gaisnī.

geason (English): Rare; uncommon; scarce; Difficult to procure;...

Definitions

Step	Language	Word	Meaning
1	Middle English	geson	Not common or plentiful; uncommon, rare, sparing,...
2	Old English	gǣsne	deprived of, wanting, destitute, barren, sterile,...
3	Proto-West Germanic	*gaisnī	—

geason — Etymology, Origin & Word History | Etymology Explorer