The phrase "like I say/said" is often used to repeat or emphasize a point that has been made previously. However, there are many synonyms that can be used instead of this phrase. Some examples include "as I mentioned before," "as I previously stated," "as I noted earlier," "as I have already said," and "as I reiterated earlier." Using these synonyms can help avoid repetition and keep the writing concise and clear. Additionally, these alternative expressions can add variety and interest to the writing. It is important to choose the appropriate synonym depending on the context and tone of the writing.