The phrase "showed tell" is a contradiction in terms since to show something means to demonstrate or display it, while to tell something means to verbally communicate it. Therefore, there are no direct antonyms for "showed tell" since it is not a valid expression. However, there are several antonyms for the separate words "show" and "tell". Antonyms for "show" could include words such as conceal, hide, or obscure, while antonyms for "tell" could include words such as withhold, suppress, or keep quiet. This demonstrates that although "showed tell" is not a valid expression, the words themselves have several antonyms that can be used in their place.