Stout can mean fat, strong, brave, or a type of beer. Learn how to use it as an adjective, noun, or adverb with Collins English Dictionary. STOUT meaning: 1 : thick and strong; 2 : having a large body that is wide with fat or muscles stout meaning, definition, what is stout: fairly fat and heavy, or having a thick ...: Learn more. strong, stout, sturdy, stalwart, tough, tenacious mean showing power to resist or to endure. strong may imply power derived from muscular vigor, large size, structural soundness, intellectual or spiritual resources. stout suggests an ability to endure stress, pain, or hard use without giving way.