English pronunciation of “twelfth”

twelfth

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

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