The phrase "most marred" means damaged or spoiled to the highest degree. Antonyms for this phrase include "undamaged," "unblemished," "pristine," "flawless," "perfect," and "immaculate." These words indicate something that is without any damage, scratches, or dents. They are often used to describe items that are new, freshly made, or never used before. The antonyms of "most marred" can also be used to describe nature, which can be seen as unspoiled and untouched by humans. Using these antonyms, we can describe things and places that are able to preserve their beauty and originality without being affected by external factors.