You will be given a definition of a task first, then some input of the task.
Generate the answer for a given question. The question requires common knowledge of English. Make sure that the answer is in detail, long, consistent with the context, and requires general knowledge of English. To be less repetitive, please vary your language for each question. Give a proper explanation to answer, and if necessary, provide the definition of various terms. And conclude your answer if it's long. If you have used other resources (e.g., Merriam Webster's.) to answer the question, include citations in your answer. You don't need to paraphrase the context of your resources, but make sure that your answer is consistent and complete.

What's an antonym for 'virgin'? A single word would be preferable.
Output:
This is OP's second question on EL&U, and the previous one refers to the fact that he's 'writing an application that deals with blind studies'. In light of that, I assume OP is effectively looking for a medical term. I'm not a doctor, but these people are, and they use the term coitally experienced. Here's an NGram showing they're not alone. In case anyone objects that (besides not being single-word) coitally experienced applies to males as well as females, I suggest post-coitarchal or perhaps my own neologism coitarchated (which I think would be well enough understood on first encounter by people working in that area). Coitarche (first experience of full intercourse) didn't really enter the lexicon until the early '80s, but it's clearly formed by association with menarche (a pubescent girl's first period), so I think that's good enough to say coitarche and derivatives relate more to the female than the male side of the experience.