-iau

Latin -ellus

-iau

1. Used to form diminutive forms of nouns

   agniau - lamb (small sheep)

• French: -eau

• -au

Cognate with Cornish -yow, Breton -ioù.

• (North Wales) IPA^(key): (standard) /jaɨ̯/, (colloquial) /jɛ/, /ja/
• (South Wales) IPA^(key): (standard) /jai̯/, (colloquial) /jɛ/
• Rhymes: -aɨ̯

-iau

1. Forms plural nouns, -s

   Synonyms: -aid, -aint, -au, -ed, -edd, -en, -i, -iadau, -iaid, -ion, -od, -oedd, -on, -ydd, -yr, -ys

   ‎cadair (“chair”) + ‎-iau → ‎cadeiriau (“chairs”)

   ‎dydd (“day”) + ‎-iau → ‎dyddiau (“days”)

   ‎clwb (“club”) + ‎-iau → ‎clybiau (“clubs”)