Barrel-chested is a term used to describe a man with a broad and round chest. However, there are several synonyms that can be used to convey the same meaning. One such synonym is a robust-chested man, who appears strong and sturdy. Another term that can be used is a bull-necked man, as he has a thick and muscular neck that complements his broad chest. An athletically-built man is another synonym that can be used, as he has well-defined muscles that give him a stocky appearance. Lastly, a thickset man is another synonym that can be used, as he is well-built and has a solid frame. These synonyms help to describe a man with a broad and muscular chest with varying degrees of emphasis on additional physical traits.