The term 'sad-looking' can be described by three words: HANGDOG (7 letters), DROOPY (6 letters), and GLUM (4 letters). HANGDOG is an adjective that describes a person who looks dejected, ashamed, or defeated. DROOPY is an adjective that describes someone who looks sad, weary, or listless. GLUM is an adjective that describes someone who looks sullen, gloomy, or despondent. All three words describe someone who looks sad or unhappy.