Where does “escuridão” come from?

escuridão (Portuguese) comes from Portuguese escuro, from Old Portuguese escuro, from Latin obscurus, from Italian scuro, from Italian oscuro, from Latin obscūrus, from Latin ob-, from Latin obolus — to throw, reach, pierce; to hit by throwing.

escuridão (Portuguese): darkness; gloom; obscurity

Definitions

darkness; gloom; obscurity

Ancestry of “escuridão”, step by step

Step	Language	Word	Meaning
1	Portuguese	escuro	dark
2	Old Portuguese	escuro	—
3	Latin	obscurus	dark, dusky, shadowy; indistinct, unintelligible,...
4	Italian	scuro	dark, deep, sombre, swarthy; dark, sombre, grim,...
5	Italian	oscuro	first-person singular present of oscurare; dark;...
6	Latin	obscūrus	—
7	Latin	ob-	towards; against
8	Latin	obolus	obolus
9	Ancient Greek	ὀβολός	obol, obolus, used at Athens as both a weight and...
10	Ancient Greek	ὀβελός	a spit, rod; a horizontal line
11	Ancient Greek	βέλος	missile, arrow, dart; weapon; something quickly...
12	Proto-Indo-European	gʷélHos	—
13	Proto-Indo-European	gʷelH-	to throw, reach, pierce; to hit by throwing

Every word from Proto-Indo-European gʷelH- →