-iaethau

== Welsh == === Etymology === -iaeth +‎ -au === Pronunciation === (North Wales, standard) IPA(key): /ˈjeɨ̯θaɨ̯/ (North Wales, colloquial) IPA(key): /ˈjeɨ̯θɛ/, /ˈjeɨ̯θa/ (South Wales, standard) IPA(key): /ˈjei̯θai̯/ (South Wales, colloquial) IPA(key): /ˈjei̯θɛ/ === Suffix === -iaethau plural of -iaeth