adeiladaethau

== Welsh == === Etymology === From adeiladaeth +‎ -au. === Pronunciation === (North Wales, standard) IPA(key): /ˌadei̯laˈdeɨ̯θaɨ̯/ (North Wales, colloquial) IPA(key): /ˌadei̯laˈdeɨ̯θɛ/, /ˌadei̯laˈdeɨ̯θa/ (South Wales, standard) IPA(key): /ˌadei̯laˈdei̯θai̯/ (South Wales, colloquial) IPA(key): /ˌadei̯laˈdei̯θɛ/ === Noun === adeiladaethau plural of adeiladaeth === Mutation ===