-ou

Inherited from Old French -eor/-or, from Latin -ātōrem and -tor.

IPA^(key): /u/

-ou

1. forms masculine agent nouns from verbs (some of which are also used as adjectives)

From Old Galician-Portuguese -ou, from Latin -āvit. Compare Portuguese -ou, Spanish -ó, and Italian -ò.

-ou

1. forms the third-person singular indicative preterite of a verb in -ar

• -eu
• -iu

Inherited from Latin -āvit.

-ou (1st conj.)

1. a suffix indicating the third-person singular indicative preterite of a verb in -ar

   ‎amar (“to love”) + ‎-ou → ‎amou (“[he/she/it] loved”)

   ‎cantar (“to sing”) + ‎-ou → ‎cantou (“[he/she/it] sang”)

• Galician: -ou
• Portuguese: -ou

From Proto-Brythonic *-ow, from Proto-Celtic *-owes, u-stem nominative plural.^[1] Cognate with Cornish -ow and Breton -où.

-ou

1. Forms plural nouns., -s

   ‎pipenn (“pipe, duct”) + ‎-ou → ‎pipennou (“pipes, ducts”)

   ‎carrecc (“stone”) + ‎-ou → ‎carrecou (“stones”)

• Middle Welsh: -eu
  • Welsh: -au

Inherited from Old Galician-Portuguese -ou, from Vulgar Latin *-āut, contracted form of Latin -āvit. Compare Galician -ou, Spanish -ó, and Italian -ò.

• Rhymes: -ow, -o

-ou

1. a suffix indicating the third-person singular indicative preterite of a verb in -ar

   ‎amar (“to love”) + ‎-ou → ‎amou (“[he/she/it] loved”)

   ‎cantar (“to sing”) + ‎-ou → ‎cantou (“[he/she/it] sang”)

• -eu
• -iu