"Pop said" is a common phrase used in dialogue to indicate that someone spoke. However, for writers wanting to avoid repetition, there are several synonyms that can be used instead. "Declared," "stated," "uttered," and "pronounced" are all strong alternatives. Depending on the tone and context of the dialogue, other options might include "muttered," "remarked," "exclaimed," "interjected," or "quipped." It's important to remember that the best synonym will vary depending on the situation, and the writer should choose the option that best indicates the character's intent, emotion, and tone of voice. By using synonyms for "pop said," writers can add variety and depth to their dialogue, making it more engaging for readers.