The antonyms for the word "more groomed" are "less polished," "messy," "unkempt," "scruffy," and "sloppy." These are all terms used to describe an appearance that is not well-tended to or refined. If someone is described as less polished, they may appear more casual or relaxed in their grooming habits. Those who are messy or unkempt may have hair that's not neatly styled, clothing that's wrinkled or dirty, and typically don't pay much attention to grooming. Scruffy and sloppy describe someone who appears disheveled or unkempt, and the opposite of being well-groomed or put together.