Antonyms for the word "is antsy" include relaxed, calm, tranquil, at ease, composed, and placid. When someone is antsy, they are feeling restless, uneasy, or anxious, whereas the opposite may describe an individual who is at peace or comfortable in their surroundings. Being relaxed means feeling free from tension or stress, which is the opposite of being antsy. A tranquil state of mind is a state of calmness and serenity, the opposite of the uneasy, restless feeling of being antsy. A composed individual is one who is at ease and in control of their emotions, whereas antsy implies a sense of unease and restlessness. Placidity describes a state of calmness and peacefulness, which is the opposite of being antsy.