un ar ddeg

== Welsh == === Alternative forms === unarddeg (nonstandard) === Etymology === From un (“one”) +‎ ar (“on”) +‎ deg (“ten”). === Pronunciation === (North Wales) IPA(key): /ˌɨːn ar ˈðeːɡ/ (South Wales) IPA(key): /ˌiːn ar ˈðeːɡ/ === Numeral === un ar ddeg (cardinal number, vigesimal) eleven Synonym: un deg un === Mutation ===