The word "avowterer" refers to a person who openly declares themselves to be an adulterer. It is pronounced as /əˈvaʊtərər/ with the stress on the second syllable. This word is spelled with the combination of the prefix "a-" which means "not" or "without" and the noun "vow" which means a solemn promise or commitment. The suffix "-er" indicates the agent or doer of the action. Therefore, the spelling of "avowterer" denotes a person who breaks their vow of fidelity.