There are several synonyms for the phrase "remain seated" that can be used to convey the same idea. Some of the most common ones include "stay seated," "keep seated," and "continue sitting." These phrases all indicate that a person should stay in their seat and not get up or leave. Other synonyms for "remain seated" include "sit tight," "hold your seat," and "remain in place." These phrases are useful in situations where someone needs to stay stationary, such as during a lecture, movie, or performance. Overall, there are many ways to express the idea of remaining seated, and the choice of words will depend on the context and tone of the situation.