rhifau

== Welsh == === Etymology === From rhif +‎ -au. === Pronunciation === (North Wales, standard) IPA(key): /ˈr̥ɪvaɨ̯/ (North Wales, colloquial) IPA(key): /ˈr̥ɪvɛ/, /ˈr̥ɪva/ (South Wales, standard) IPA(key): /ˈr̥iːvai̯/, /ˈr̥ɪvai̯/ (South Wales, colloquial) IPA(key): /ˈr̥iːvɛ/, /ˈr̥ɪvɛ/ Rhymes: -ɪvaɨ̯ === Noun === rhifau plural of rhif (“number”) === Mutation ===