quatro (Portuguese)
Where does "quatro" come from?
The Portuguese word 'quatro' traces its roots back to the ancient Proto-Indo-European term *kʷetwóres, meaning 'four.' It evolved through Proto-Italic as *kʷettwōr before becoming the Latin 'quattuor.' Eventually, it passed through Old Galician-Portuguese to arrive at its modern form, maintaining the same numerical meaning throughout its millennia of history.
Full etymology tree
- quatro (Portuguese), 'four'
- inherited quatro (Old Galician-Portuguese)
- inherited quattuor (Latin), 'four; 4'
- inherited *kʷettwōr (Proto-Italic), 'four'
- inherited *kʷetwṓr (Proto-Indo-European)
- inherited *kʷetwóres (Proto-Indo-European), 'four'
- derived *kʷet- (Proto-Indo-European)
- derived *kʷetu- (Proto-Indo-European)
- inherited *kʷetwóres (Proto-Indo-European), 'four'
- inherited *kʷetwṓr (Proto-Indo-European)
- influence *kʷtwr̥- (Proto-Indo-European)
- inherited *kʷettwōr (Proto-Italic), 'four'
- inherited quattuor (Latin), 'four; 4'
- inherited quatro (Old Galician-Portuguese)
Ancestors
- quattuor (Latin)
- *kʷettwōr (Proto-Italic)
- *kʷetwóres (Proto-Indo-European)
Updated July 2026
Etymology data from Wiktionary, CC BY-SA 4.0 · About Miraris