When it comes to finding synonyms for the phrase "is silent," there are plenty of options to choose from. Some examples could include words like quiet, hushed, still, mute, noiseless, tranquil, calm, and peaceful. It's important to note that while these words all share a similar meaning to "is silent," they may have slightly nuanced interpretations, depending on the context in which they're used. For example, "quiet" may refer to a lack of sound or noise, whereas "tranquil" might imply a sense of calmness or serenity. Ultimately, choosing the right synonym for "is silent" will depend on the tone and meaning that you're trying to convey in your writing or speech.