English pronunciation of “eightieth”

eightieth

us How to pronounce eightieth adjective in American English
uk How to pronounce eightieth ordinal number in British English
us How to pronounce eightieth ordinal number in American English
uk How to pronounce eightieth noun in British English
us How to pronounce eightieth noun in American English

(English pronunciations of “eightieth” from the Cambridge Advanced Learner's Dictionary & Thesaurus and from the Cambridge Academic Content Dictionary, both sources © Cambridge University Press)