When it comes to looking for synonyms for the word "hotted up", there are a plethora of options available to choose from. Some of the most commonly used synonyms for this phrase include "amped up", "energized", "revved up", "fired up", "charged up", and "sparked up". All of these phrases basically refer to increasing the intensity or excitement of something, whether it be a person's mood, a conversation, or an event. Other similar phrases you could use include "heated up" or "turned up", both of which convey the idea of something becoming more intense or lively. Ultimately, the synonym you choose will depend on the context and the tone you want to convey.