pedwerydd ar bymtheg a phedwar ugain

== Welsh == === Alternative forms === 99ain (abbreviation) === Etymology === From pedwerydd (“fourth”) +‎ ar (“on”) +‎ pymtheg (“fifteen”) +‎ a (“and”) +‎ pedwar (“four”) +‎ ugain (“twenty”). === Pronunciation === (North Wales) IPA(key): /pɛdˌwɛrɨ̞ð ar ˌbəmθɛɡ a ˌfɛdwar ˈɪɡai̯n/ (South Wales, standard, colloquial) IPA(key): /pɛdˌweːrɪð ar ˌbəmθɛɡ a ˌfɛdwar ˈiːɡai̯n/, /pɛdˌwɛrɪð ar ˌbəmθɛɡ a ˌfɛdwar ˈɪɡai̯n/ (South Wales, colloquial) IPA(key): /pɛdˌweːrɪð ar ˌbəmθɛɡ a ˌfɛdwar ˈiːɡɛn/, /pɛdˌwɛrɪð ar ˌbəmθɛɡ a ˌfɛdwar ˈɪɡɛn/ === Adjective === pedwerydd ar bymtheg a phedwar ugain (feminine singular pedwaredd ar bymtheg a phedwar ugain, plural pedwerydd ar bymtheg a phedwar ugain, not comparable) (ordinal number) ninety-ninth === Mutation ===