The phrase "be agog" means to be excited or eager about something. There are several synonyms that can be used to convey the same meaning, including "be thrilled," "be elated," "be enthusiastic," "be ecstatic," "be overjoyed," "be exhilarated," "be eager," and "be rapturous." These words can be used interchangeably, depending on the context and the level of excitement being expressed. When you are excited about something, it's natural to feel agog or eagerly anticipate it. Make sure to choose the right synonym to accurately reflect your level of enthusiasm about something.