Antonyms for the phrase "assumes role" could include phrases such as "abdicates responsibility," "declines position," or "rejects duty." These phrases imply a lack of willingness or ability to take on a particular role or set of responsibilities, as opposed to taking it on with confidence and commitment. Other antonyms could include phrases like "resists leadership," "loses authority," or "abstains from action," depending on the context of the situation. By understanding the opposite meanings of the phrase "assumes role," we can better appreciate the importance of taking on responsibilities and leadership confidently and effectively.