IPA: /nɒnˈvɜːdʒɪn/
KK: /nɑnˈvɜrdʒɪn/
A person who has engaged in sexual intercourse and is therefore not a virgin.
After their first experience, they considered themselves nonvirgin.
Nonvirgin → It is formed from "non-" (meaning not) and "virgin" (from Latin "virgo", meaning a young woman or maiden). The word "nonvirgin" means not a virgin, indicating someone who has had sexual experience.
Think of 'not' ('non-') combined with 'virgin' to remember that 'nonvirgin' refers to someone who is not a virgin.