LATIN DICTIONARYLexicon Latīnum
suffixfirst/second-declension suffix

-ōsus

-ōsus (feminine -ōsa, neuter -ōsum)
Classical[oː.sʊs]Ecclesiastical[o.s̬us]

Meaning

  1. morphemesuffixused to form adjectives from nouns; -ose, -ous, -ful (full of or overly prone to)
    nervus (“sinew, energy”) + -ōsus → nervōsus (“sinewy; nervous; energetic”)
    racēmus (“cluster, bunch”) + -ōsus → racēmōsus (“clustering”)

Origins

  1. Proto-Indo-European*h₃ed-
  2. Proto-Indo-European*h₃édosder.?
  3. Latin-ōsus

From older -ōssus. Likely reflects a Proto-Indo-European derivation *-h₃d-s-o-s from an athematic s-stem *h₃éd-os ~ *h₃éd-esos (“smell”, whence odor), from the root *h₃ed- (“to smell”). Originally meaning “smelling like”, as evidenced possibly by hircōsus (“smelling like a goat”) and vinōsus (“fond of wine, *reeking of wine?”), it would have later generalised into “full of”. Compare related Ancient Greek -ώδης (-ṓdēs, “smelling like; full of”) and Old Armenian -ոտ (-ot) which underwent the same semantic change. Alternatively, a derivation from Proto-Indo-European *-wénts has also been proposed, through a form such as *-wont-to- by suffixation of *-tós. This would make it a cognate of Ancient Greek -οῦς (-oûs).

Descendants
  • Catalan-ós
  • Italian-oso
  • Occitan-ós
  • Portuguese-osofrom Old Galician-Portuguese -oso
  • French-euxfrom Old French -us
  • German-ösfrom Old French -us
  • French-ueuxfrom Old French -us
  • English-ousfrom Old French -us
  • Spanish-osofrom Old Spanish -oso
  • Romanian-os

Quick answers

What does -ōsus mean in Latin?
-ōsus, a suffix, means “used to form adjectives from nouns; -ose, -ous, -ful (full of or overly prone to)”.
How do you pronounce -ōsus?
In classical Latin, [oː.sʊs]; in ecclesiastical (church) Latin, [o.s̬us].
Where does -ōsus come from?
Proto-Indo-European *h₃ed- → Proto-Indo-European *h₃édosder.? → Latin -ōsus.