The phrase "most free-and-easy" suggests an individual who is relaxed, carefree, and spontaneous. Antonyms for this term would be someone who is uptight, tense, and rigid in their behavior. A person who is overly concerned with rules and regulations, and may be unadventurous and cautious, would not be considered "most free-and-easy." Furthermore, people who are anxious, panicked, and nervous may also be antonyms for someone who is free-and-easy. Individuals who are hesitant, insecure, and worried would not be able to embody the spirit of a person who is "most free-and-easy." The antonyms of this concept exist in the form of conformity, anxiety, and rigidity.