There are many synonyms for the phrase "other fish to fry", which means having more important or pressing matters to attend to than a particular issue or task. Other expressions with similar meaning include "priorities to focus on", "more pressing concerns", "bigger fish to fry", "more significant issues to address", and "more important matters at hand". These phrases suggest that the speaker is not interested in or willing to give attention to a particular situation at this time, and instead has more significant or urgent responsibilities to prioritize. This concept is commonly used in business, politics, and everyday conversations to express the need to allocate limited time and resources to the most critical tasks at hand.