"Set curiosity agog" is an expression used to describe an extreme state of excitement or anticipation. There are several synonyms that can be used in place of this phrase. One possible alternative is "piqued interest," which suggests a strong desire to learn more about something. Another option is "captivated attention," which implies a deep fascination or absorption with a particular subject. Other synonyms for "set curiosity agog" might include "intrigued fascination," "enthralled curiosity," or even "mesmerized interest." No matter which phrase is used, the idea is to convey a sense of intense curiosity and excitement that cannot be contained.