The word "adultery" is commonly misspelled as "advoutry." The correct pronunciation of this word is /əˈdʌltəri/, with the stress on the second syllable. The spellings of the word may have been influenced by its French origin, where the word is spelled "adultère." It is important to use correct spellings as misspellings can lead to confusion and miscommunication. Therefore, it is recommended to double-check the spellings before using this word in any written or oral communication.