When looking for antonyms for the phrase "most terror-stricken", it is important to consider words that convey a sense of calm, safety, or contentment. The opposite of terror-stricken could be words like comfortable, relaxed, or peaceful. Other antonyms might include words like brave, fearless, or courageous, as these describe individuals who are calm and collected in the face of danger or uncertainty. Additionally, confident, unafraid, and composed are all excellent antonyms for the phrase "most terror-stricken" that describe a person who is not easily intimidated or frightened. By considering these various antonyms, you can gain a better understanding of the range of emotions and experiences that exist in the world.