The word "anaphrodisia" refers to a lack of sexual desire or decreased libido. The antonyms for this word, on the other hand, would refer to an increased sexual desire or libido. Some potential antonyms for anaphrodisia include aphrodisia, eroticism, sensuality, and sexual arousal. These words represent a strong sexual desire or attraction, and are often used to describe individuals who are experiencing heightened sexual feelings. It is important to note, however, that these antonyms should be used with care and respect, as sexual desire can vary greatly between individuals, and should never be assumed or taken for granted.