Where does “pis” come from?

pis (Old French) comes from Latin pēius, from Latin pēior, from Latin malus, from Ancient Greek μηλέα, from Ancient Greek μῆλον, from Proto-Indo-European (s)meh₁l- — small animal”; small animal.

Ancestry of “pis”, step by step

Step	Language	Word	Meaning
1	Latin	pēius	—
2	Latin	pēior	worse
3	Latin	malus	unpleasant, distressing, painful, nasty, bad;...
4	Ancient Greek	μηλέα	apple tree
5	Ancient Greek	μῆλον	apple; any fruit from a tree; a woman's breast
6	Proto-Indo-European	(s)meh₁l-	small animal”; small animal

Words derived from “pis”

pis
pis-aller
pis aller

Every word from Proto-Indo-European (s)meh₁l- →Every word from Ancient Greek μῆλον →Every word from Ancient Greek μηλέα →