unfed ar ddeg ar hugain

== Welsh == === Alternative forms === 31ain (abbreviation) === Etymology === Literally, “eleventh on twenty”. === Pronunciation === (North Wales) IPA(key): /ˌɨːnvɛd ar ˌðeːɡ ar ˈhɪɡai̯n/ (South Wales) IPA(key): /ˌiːnvɛd ar ˌðeːɡ ar ˈhiːɡai̯n/, /ˌiːnvɛd ar ˌðeːɡ ar ˈhɪɡai̯n/ === Adjective === unfed ar ddeg ar hugain (feminine singular unfed ar ddeg ar hugain, plural unfed ar ddeg ar hugain, not comparable) (ordinal number) thirty-first === Mutation ===