The antonyms for the word "more decorated" can be "less adorned," "plain," or "understated." These words indicate the opposite of something that is heavily embellished or ornate. Instead, they suggest a simpler or more minimal approach to decoration. Using these antonyms can help temper an overly busy or garish aesthetic, bringing a sense of calm and balance to a space or object. Whether in interior design, fashion, or art, these antonyms provide a valuable contrast to the more elaborate and extravagant styles that can sometimes dominate our visual culture.