Belliest is spelled with two "l's" and a "y" at the end. According to the International Phonetic Alphabet (IPA) transcription, the first syllable is pronounced /bɛl/ with a short "e" sound and a "l" consonant sound. The second syllable is pronounced /i/ with a short "i" sound, and the final syllable is pronounced /ɛst/ with a short "e" sound and a "st" consonant sound. The word is an adjective that describes someone or something as having the largest or fattest belly.