The phrase "black-and-blue" is often used to describe bruises or injuries, but there are several antonyms that can be used to convey the opposite meaning. "Unblemished" is an antonym for black-and-blue that indicates something or someone is free from bruises or injuries. "Untouched" means that the skin or surface is free from any discoloration, swelling, or injury. "Smooth" and "clear" are also antonyms for black-and-blue as they describe something that is free from any roughness or marks. Lastly, "unmarred" describes something that is free from any marks or blemishes, including bruises. These antonyms are useful in communication to indicate the absence of pain, injury, or physical harm.