The spelling of the word "most announcing" follows the basic rules of English phonetics. The first syllable "most" is pronounced as /moʊst/ with the long "o" sound and the final "st" sound. The second syllable "an-noun-cing" is pronounced as /əˈnaʊnsɪŋ/, with the emphasis on the second syllable, a short "a" sound, and the "ing" ending. When put together, "most announcing" is pronounced as /moʊst əˈnaʊnsɪŋ/, with a stress on the first syllable and the clear pronunciation of each individual sound in the word.