Where does “cupinzão” come from?

cupinzão (Portuguese) comes from Portuguese -zão, from Portuguese -ão, from Old Portuguese -ão, from Latin -ānus — Of or pertaining to; -ian.

Ancestry of “cupinzão”, step by step

StepLanguageWordMeaning
1Portuguese-zão—
2Portuguese-ãoforms the augmentative of nouns; forms the...
3Old Portuguese-ão—
4Latin-ānusOf or pertaining to; -ian
Every word from Latin -ānus →Every word from Portuguese -ão →Every word from Portuguese -zão →