Where does “-ais” come from?

-ais (Portuguese) comes from Portuguese -al, from Old Portuguese -al, from Latin -ālis, from Proto-Italic -ālis — forms relational adjectives.

-ais (Portuguese): plural of -al; API; forms the second-person...

Definitions

  1. plural of -al; API; forms the second-person...

Ancestry of “-ais”, step by step

StepLanguageWordMeaning
1Portuguese-alappended to noun X, forms adjectives meaning “of...
2Old Portuguese-al—
3Latin-ālis—
4Proto-Italic-ālisforms relational adjectives
Every word from Proto-Italic -ālis →Every word from Latin -ālis →Every word from Portuguese -al →