Spruced up is a phrase used to describe someone or something looking neat, clean, and groomed. The antonyms of this phrase would be words or phrases that describe the opposite, such as unkempt, messy, or disheveled. Other antonyms could include shabby, dirty, ragged, unpolished, rough, or scruffy. These words describe the opposite of a well-groomed appearance, and instead suggest that something is poorly kept or in disarray. While spruced up is often associated with a polished, put-together look, antonyms of this phrase suggest a more casual or unkempt appearance.