The phrase "banged up" typically refers to something that is damaged, broken or in a poor condition. Some antonyms of this phrase include words like repaired, fixed, renovated, restored or refurbished. These words imply that the thing which was previously in a bad condition has been repaired or restored to its original state or even better. Other antonyms for "banged up" can include words like new, pristine, perfect or flawless, which suggest that the thing is in excellent condition and has no damage whatsoever. These antonyms offer a clear contrast to the idea of something being "banged up" and can be used to describe items that have undergone a process of improvement or restoration.