Sonsier is not a commonly used word in English. It is actually a misspelled version of the word "saucier," which means a chef who specializes in making sauces. The correct spelling of the word is saucier, which is pronounced as /ˈsɒsi.eɪ/. The phonetic transcription of the word shows that it is composed of two syllables, with the stress falling on the first syllable. It is important to use correct spelling and pronunciation of words to effectively communicate ideas and avoid confusion.