When an event "goes off well," it means that it was successful, went according to plan, and was enjoyable for those involved. There are plenty of synonyms that can be used to describe this happy outcome, including "runs smoothly," "goes as planned," "proceeds without a hitch," "is a hit," "is a success," or "is flawless." These phrases can be used in a wide variety of contexts, from a party or social gathering to a business meeting or important event. Whatever the situation may be, having a collection of synonyms for "goes off well" can help you communicate your thoughts and feelings more effectively.