"Triombrast" is a unique and uncommon word that requires careful attention to its spelling. The word is spelled as [triːɒmbɹæst] in IPA phonetic transcription. The initial sound "tr" is followed by a long "i" sound, and the stress is placed on the second syllable. The final "t" sound is pronounced distinctly, and the "a" sound in the second syllable is followed by the consonant cluster "mb." The final syllable contains a short "a" sound, followed by the "s" sound. Overall, the word's phonetic transcription accurately reflects its spelling in English.