Where does “piolhoso” come from?

piolhoso (Portuguese) comes from Portuguese piolho, from Old Portuguese peollo, from Late Latin peduclus, from Latin peduculus, from Latin pedīculus, from Latin pēdis, from Latin pēs, from Ancient Greek μέτρον — Derives agent nouns from verbs, denoting someone...

piolhoso (Portuguese): lousy infested with lice

Definitions

lousy infested with lice

Ancestry of “piolhoso”, step by step

piolhoso traces back through two separate lines of ancestry.

via Portuguese piolho

Step	Language	Word	Meaning
1	Portuguese	piolho	louse
2	Old Portuguese	peollo	louse
3	Late Latin	peduclus	Alternative form of pēduculus
4	Latin	peduculus	Alternative form of pēdiculus; louse
5	Latin	pedīculus	A little foot
6	Latin	pēdis	louse
7	Latin	pēs	a foot, in its senses as
8	Ancient Greek	μέτρον	something used to measure: measure, rule, weight;...
9	Ancient Greek	-τρον	Forms instrument nouns
10	Proto-Hellenic	-tron	Forms instrument nouns from verb stems
11	Proto-Indo-European	-trom	Forms nouns denoting a tool or instrument
12	Proto-Indo-European	-tḗr	Derives agent nouns from verbs, denoting someone...

via Vulgar Latin peduclosus

Step	Language	Word	Meaning
1	Vulgar Latin	peduclosus	—
2	Latin	peduculōsus	lousy; full of lice
3	Latin	pēdīculōsus	lousy; full of lice
4	Latin	-ōsus	ose, -ous, -ful (full of or overly prone to)
5	Old Latin	-ōssus	—

Every word from Proto-Indo-European -tḗr →Every word from Ancient Greek -τρον →Every word from Ancient Greek μέτρον →