Exclamation mark is a punctuation mark used to express strong feelings or emphasize a point. There are several synonyms for exclamation mark such as "bang", "shout mark", "startler", and "interrobang". "Bang" is a common term used for exclamation marks in journalism or informal contexts. Similarly, "shout mark" highlights the loud tone of the punctuation, emphasizing its expressive nature. "Startler" refers to the mark's ability to catch the reader's attention and convey the writer's emotional state. Lastly, "interrobang" is a less common term combining the question mark and exclamation mark. All these synonyms emphasize the exclamation mark's function as a powerful and expressive punctuation symbol.