Most flummoxed can be used to describe a perplexed or confused state of mind. To find antonyms for this term, we can look for words that indicate clarity, confidence, or certainty. Some possible antonyms include "unflappable," "calm," "assured," "composed," "confident," and "clear-headed." These words suggest a steadfast and unwavering state of being, the opposite of the disorientation that comes with being flummoxed. By using these antonyms, we can paint a picture of somebody who is self-assured, confident, and in control, creating a tone that is the polar opposite of the one created by the word "most flummoxed.