un ar ddeg ar hugain

== Welsh == === Etymology === From un (“one”) +‎ ar (“on”) +‎ deg (“ten”) +‎ ar (“on”) +‎ ugain (“twenty”). === Pronunciation === (North Wales, standard, colloquial) IPA(key): /ˌɨːn ar ˌðeːɡ ar ˈhɪɡai̯n/ (North Wales, colloquial) IPA(key): /ˌɨːn ar ˌðeːɡ ar ˈhɪɡai̯n/ (South Wales, standard, colloquial) IPA(key): /ˌiːn ar ˌðeːɡ ar ˈhɪɡai̯n/, /ˌiːn ar ˌðeːɡ ar ˈhiːɡai̯n/ (South Wales, colloquial) IPA(key): /ˌiːn ar ˌðeːɡ ar ˈhɪɡɛn/, /ˌiːn ar ˌðeːɡ ar ˈhiːɡɛn/ === Numeral === un ar ddeg ar hugain (cardinal number) thirty-one Synonym: tri deg un === Mutation ===