Where does “pigra” come from?

pigra (Latin) comes from Latin piger, from Latin pigeō, from Proto-Indo-European peyǵ- — inactive, reluctant.

pigra (Latin): nominative feminine singular of piger; nominative...

Definitions

Step	Language	Word	Meaning
1	Latin	piger	backward, slow, dull, lazy, indolent, sluggish,...
2	Latin	pigeō	—
3	Proto-Indo-European	peyǵ-	inactive, reluctant

pigra — Etymology, Origin & Word History | Etymology Explorer