The phrase "need doing" can have several synonyms depending on the context. In a business setting, it can mean "require attention," "demand action," or "need to be addressed." In a personal context, it can mean "require completing," "need to be accomplished," or "need to be taken care of." In general, some other synonyms for "need doing" can include "requirement," "necessity," or "must-do." It's important to choose the appropriate synonym based on the context to communicate effectively and clearly. Using the right synonym can also convey a sense of urgency, importance, and responsibility.