Assuefactions is not a commonly used word, but is spelled as əˌswiːˈfækʃənz. The first syllable is pronounced as "uh", the second syllable is pronounced as "swee", and the third syllable is pronounced as "fak". The "tions" at the end indicates that it is a noun. The word means the process of becoming desensitized or addicted to something. It is important to use phonetic transcription to ensure proper pronunciation of words, especially those that are rarely used.