The antonyms for the word "un-attractivenesses" would primarily be words that describe a pleasing or appealing appearance, such as beauty, attractiveness, elegance, charm, or allure. These words emphasize the positive qualities of a person or thing and suggest that they are visually appealing and pleasing to the senses. Other antonyms may include terms like radiance, grace, loveliness, or glamour, all of which suggest an attractive and pleasing appearance or demeanor. Essentially, any words that denote the opposite of "unattractive" would serve as antonyms for "un-attractivenesses".