The phrase "gets the jump on" refers to gaining an advantage over someone or something by acting quickly or unexpectedly. Antonyms for this phrase would include words such as "falls behind," "lags behind," "misses out," or "loses ground." These words describe a situation in which a person, team, or organization fails to act quickly enough, giving their competition an advantage. Other antonyms might include "procrastinates," "hesitates," or "delayed," all of which describe actions that prevent one from acting quickly or effectively. It's important to understand the antonyms for "gets the jump on" in order to avoid being at a disadvantage in competitive situations.