Where does “diabão” come from?

diabão (Portuguese) comes from Portuguese diabo, from Old Portuguese diaboo, from Latin Diabolus, from Ancient Greek Διάβολος, from Ancient Greek διαβάλλω, from Ancient Greek δῐᾰ-, from Ancient Greek διά, from Proto-Indo-European dwís — two.

Ancestry of “diabão”, step by step

StepLanguageWordMeaning
1Portuguesediabodevil; demon; fiend; an evil or perverse person;...
2Old Portuguesediaboo
3LatinDiabolusthe Devil
4Ancient GreekΔιάβολοςslanderous; libellous
5Ancient Greekδιαβάλλωthrow over or across; set at variance, make a...
6Ancient Greekδῐᾰ-apart; through, across; through; in different...
7Ancient Greekδιάthroughout
8Proto-Indo-Europeandwístwice, doubly; in two
9Proto-Indo-Europeandwóh₁two
Every word from Proto-Indo-European dwóh₁Every word from Ancient Greek δῐᾰ-Every word from Proto-Indo-European dwís