The phrase "three cheers" is often used to express joy or excitement, but it can become repetitive if used too frequently. Therefore, it's important to have some synonyms which can be used instead of the phrase "three cheers". Some possible alternatives to consider include "hurrah", "hooray", "bravo", "yay", "hip hip hooray", "all hail", "long live", and "viva". These synonyms can be used in various situations such as to celebrate a victory, to express support, or to congratulate someone. By using different phrases to express joy and excitement, you can add more variety and interest to your language.