Where does “nono” come from?

nono (Old Portuguese) comes from Latin nōnus, from Latin novenos, from Latin novem, from Latin novo, from Proto-Italic nowāō, from Proto-Indo-European néweh₂ti, from Proto-Indo-European néwos, from Proto-Indo-European new- — new; to nod, assent to.

Ancestry of “nono”, step by step

StepLanguageWordMeaning
1Latinnōnusninth
2Latinnovenosaccusative masculine plural of novēnus
3Latinnovemnine; 9; first-person singular present active...
4LatinnovoI make new, renew, refresh; I alter, change;...
5Proto-Italicnowāō
6Proto-Indo-Europeannéweh₂tito renew
7Proto-Indo-Europeannéwosnew
8Proto-Indo-Europeannew-new; to nod, assent to

Words derived from “nono

Every word from Proto-Indo-European new-Every word from Proto-Indo-European néwosEvery word from Proto-Indo-European néweh₂ti