"Wrinkledness" is an uncommon word, which essentially means the state of being wrinkled or having wrinkles. The antonyms for this word can include the state of being smooth, wrinkle-free, or unwrinkled, among others. Some synonyms for "wrinkledness" that would have opposite meanings include "smoothness," "freshness," "youthfulness," and "elasticity." In a broader sense, antonyms for "wrinkledness" could be "perfection," "flawlessness," or "immaculateness," which imply a state of being without any visible faults or defects. Regardless, it's important to embrace one's unique features, including wrinkles, which reflect a life that has been lived and experienced.