Yellow-bellied is a term used to describe someone who lacks courage or is easily frightened. The antonyms for the phrase "most yellow-bellied" include brave, courageous, daring, fearless, intrepid, and bold. These words are used to describe individuals who exhibit strength and determination in the face of danger or adversity. While yellow-bellied individuals may shrink back in fear, the antonyms portray individuals who stand their ground and face challenges with confidence. The antonyms for "most yellow-bellied" not only describe physical courage but also the ability to confront emotional challenges and take risks.