Supersonic speed is a term used to describe speeds that are faster than the speed of sound. When it comes to describing this speed, other synonyms can be used to convey the same meaning. These synonyms include hypersonic speed, ultrafast, supersonorous, transonic, and sonic velocity. Each of these words can be used to replace supersonic speed in a sentence to make it more engaging for readers. Hypersonic speed, for instance, refers to speeds beyond supersonic speeds. Ultrafast, on the other hand, is used to describe speeds that are so fast that they are hard to comprehend. By using these synonyms in your writing, you can express the speed you're talking about more clearly and convey your message more effectively.