The word "sad-faced" has various synonyms that can be used to describe the facial expression of someone who is feeling sad or unhappy. Some common alternatives include gloomy, dejected, downcast, crestfallen, melancholic, forlorn, mopey, and mournful. Other words that can be used to describe a sad or gloomy expression include dour, lugubrious, morose, woebegone, and sorrowful. All of these synonyms capture the essence of a facial expression that conveys sadness or despair. When writing about someone's demeanor or mood, it's important to choose the right word to accurately reflect the emotions being conveyed.