Therriault is a French surname with a complex spelling. In IPA phonetic transcription, it is transcribed as /tɛrjoʊ/. The word starts with a voiceless alveolar stop /t/, followed by an open-mid front unrounded vowel /ɛ/ and an r-colored open-mid back unrounded vowel /ɔ/. The final syllable contains a diphthong /joʊ/ that starts with a near-close near-front rounded vowel /y/ and ends with a diphthong that starts with an open-mid back rounded vowel /o/ and finishes with a glide /ʊ/. Overall, it is a unique spelling with a fascinating phonetic structure.