"Beside the mark" is an idiomatic expression that means something is not accurate or relevant to the topic at hand. Some synonyms for this phrase include "off the mark", "off target", "miss the point", "irrelevant", "inappropriate", and "out of place". These terms highlight the fact that the subject matter being discussed has strayed from the main idea or goal. Whether in conversation, written communication, or in the context of a project, being "beside the mark" can lead to confusion and incorrect assumptions. It is important to stay focused and connected to the topic at hand to ensure clear communication and effective collaboration.