The phrase "am back of" implies being in a position behind something or someone. Some antonyms for this phrase could be "in front of", "ahead of", "before", or "at the front." These words describe a position that is situated in front of or before something else. Additionally, words such as "leading", "pioneering", or "guiding" could also be considered antonyms, as they suggest being at the forefront of a movement or guiding a team towards success. It's crucial to know and understand antonyms as they add depth to our language and help us communicate more effectively.