The antonyms for the word "more inexcitable" could be "less calm," "more agitated," or "more excitable." When describing a person or situation as "inexcitable," it suggests a sense of calmness and control. However, when you want to describe an opposite situation, you could use antonyms such as "more nervous," "more restless," or "more excitable." These words convey a sense of energy and urgency, which is the opposite of being inexcitable. In summary, using antonyms such as those listed above can help create a more vivid and descriptive picture of a person or situation.