There are many words and phrases that can be used as synonyms for "dropped the ball", which means to fail or make a mistake. Some good options include "fell short", "missed the mark", "let down", and "slipped up". Other choices might include "dropped the baton", "failed to follow through", "botched it", or "messed up". No matter which words or phrases you choose to use in place of "dropped the ball", the important thing is to communicate clearly and effectively about the mistake or failure that has taken place. This can help ensure that people can learn from the mistake and avoid making similar missteps in the future.