Punctuates is a word that refers to the act of putting periods, commas, or other marks at regular intervals in a sentence or piece of writing. However, there are several synonyms for this term that can be used in different contexts. One such synonym is "accentuates," which can be used to emphasize particular points in a piece of writing. Another synonym for punctuates is "interjects," which means to insert brief comments or interruptions in a conversation. "Emphasizes" is another synonym for punctuates that can convey a sense of added emphasis or importance to certain words or phrases in a sentence. Overall, punctuates can be replaced with many words depending on the context, tone, and purpose of the writing.