Where does “-o” come from?

-o (Portuguese) comes from Old Portuguese -o, from Latin -ō, from Proto-Indo-European -ō — Derives nouns from roots.

-o (Portuguese): forms masculine singular nouns and adjectives;...

Definitions

  1. forms masculine singular nouns and adjectives;...

Ancestry of “-o”, step by step

StepLanguageWordMeaning
1Old Portuguese-o—
2Latin-ōsuffixed to nouns or adjectives. Originally a-stem nouns. Later extended to nouns with other stems. Forms regular first-conjugation verbs
3Proto-Indo-European-ōDerives nouns from roots

Words derived from “-o”

Every word from Proto-Indo-European -ō →Every word from Latin -ō →Every word from Old Portuguese -o →