"Bagged it" typically refers to successfully accomplishing or obtaining something. Its antonyms may include failed, missed, or unsuccessful attempts or outcomes. Other opposite phrases could be "left it behind," "lost it," or "let it go." "Bagged it" could also imply completing something in advance, so antonyms might include procrastinated or delayed. In a sense, the opposite of "bagged it" is often a state of incompleteness or disappointment rather than a specific action. Depending on the context, alternative phrases with opposing meanings might include "blew it," "gave up," or "chickened out." Ultimately, the opposite of "bagged it" will vary based on what the action refers to specifically.