The word "in excitable" refers to someone who is calm and composed, and does not easily get excited or aroused. Some antonyms for this word could include terms like "excitable," "jittery," "jumpy," "nervous," and "tense." These words all describe individuals who are prone to reacting strongly, quickly, and often involuntarily to stimuli in their environment. While some people may view being inexcitable as a positive trait, others may see it as a liability, particularly in situations where quick and decisive action is needed. Regardless of individual viewpoints, it is always important to recognize and appreciate a variety of personality types and behaviors in order to foster understanding and cooperation in interpersonal relationships.