Accountableness primarily means "the quality or state of being answerable or responsible". Its antonyms could be irresponsibility, unaccountability, indifference, carelessness, or untrustworthiness. Some people may try to avoid taking accountability for their actions and instead ignore or deny their responsibilities, which is an example of unaccountability. Indifference is another opposite of accountableness, as it refers to a lack of concern or interest in fulfilling duties or obligations. Similarly, carelessness may refer to neglecting to perform tasks or obligations with the necessary attention or diligence. Untrustworthiness is also an antonym, denoting a lack of reliability or honesty in fulfilling responsibilities. Overall, these opposite words highlight the importance of accountability in personal and professional settings.