When it comes to finding antonyms for the phrase "most nonemotional," many words come to mind. Emotional, passionate, sentimental, and expressive all serve as the polar opposite of nonemotional. However, it's essential to note that nonemotional is not the same as unemotional, which means lacking emotion. Nonemotional refers to someone who doesn't necessarily express their emotions, but that doesn't mean they don't experience them. Hence, antonyms for nonemotional should be words that convey the opposite idea, such as lively, spirited, effusive, and animated. These words describe someone who is unafraid to express their feelings freely and openly.