Deceptivenesses refers to the quality of being misleading or deceitful. In order to understand its antonyms, we must first consider its synonyms, which include deceit, dishonesty, and fraudulence. Antonyms for deceptivenesses would therefore include truthfulness, honesty, and sincerity. Other possible antonyms might be transparency, frankness, or candidness. Essentially, anything that expresses the opposite of deception would be considered an antonym of deceptivenesses. These words hold great value in communication, building trust, and establishing identity in society. In short, using antonyms of deceptivenesses can help to create a more honest and trustworthy individual, and is an essential aspect of any healthy relationship.