-douro

• -doiro (older form)

• Rhymes: -owɾu, -oɾu

Alteration of -doiro, inherited from Old Galician-Portuguese -doiro, from Latin -tōrius, with regular metathesis of /rj/ to /jr/. Doublet of -tório.

-douro (adjective-forming suffix, feminine -doura, masculine plural -douros, feminine plural -douras)

1. performing or undergoing an action that will be completed in the future

   ‎passar (“to pass”) + ‎-douro → ‎passadouro (“passing”)

   ‎render (“to yield, produce”) + ‎-douro → ‎rendedouro (“that will produce in great quantities”)

2. that is liable or deserving of undergoing an action; -able

   ‎casar (“to marry”) + ‎-douro → ‎casadouro (“old enough to be married”)

Alteration of -doiro, inherited from Old Galician-Portuguese -doiro, from Latin -tōrium (neuter of -tōrius), with regular metathesis of /rj/ to /jr/.

-douro m (noun-forming suffix, plural -douros)

1. forms the name of places or features where an activity (expressed by the suffixed verb) occurs

   ‎matar (“to kill”) + ‎-douro → ‎matadouro (“slaughterhouse”)

   ‎comer (“to eat”) + ‎-douro → ‎comedouro (“a place where animals feed”)

   ‎respirar (“to breathe”) + ‎-douro → ‎respiradouro (“vent”)

2. (uncommon) forms the name of tools used to perform an activity (expressed by the suffixed verb)

   Synonym: -dor

   ‎varrer (“to sweep”) + ‎-douro → ‎varredouro (“oven broom”)