The word "un-excited" implies a state of not being enthusiastic or interested in something. Antonyms of this word could include "enthused," which means being excited or passionate about something, or "excited," which refers to a feeling of eagerness or anticipation. Other antonyms could include "animated," which suggests a lively or energetic state, or "thrilled," which denotes an intense sense of happiness or excitement. Additionally, "keen" and "eager" could also be considered antonyms, as they refer to a strong desire or enthusiasm for something. Overall, there are a variety of antonyms for "un-excited" that convey a positive and enthusiastic state of mind.