The word "more calmative" suggests an increase in the ability to soothe and settle the mind and body. However, its antonyms convey the opposite meaning of increased arousal, agitation, or restlessness. Some of the antonyms that are often used to convey the opposite of "more calmative" include stimulating, energizing, invigorating, arousing, exciting, and unsettling. While calmative words are often used to describe a state of peacefulness and tranquility, their antonyms highlight a sense of liveliness, vigor, and restlessness. The context is important while using these contrasting words to convey the intended meaning accurately.