The antonyms for the word "more agitable" can be interpreted in various ways. Some of the antonyms can be composed of words like tranquil, serene, peaceful, lull, calm, and quiet that share the opposite meaning of agitable. These words describe a feeling of tranquility and calmness, which is entirely opposite of what agitable means, that is, capable of being disturbed or easily emotionally aroused. In terms of personality traits, the antonyms for agitable can be words like placid, phlegmatic, peaceful, or placid, to describe a person who has calm and composed behavior, does not get easily disturbed by things, and does not react impulsively.