A nymphet is “an attractive and sexually mature young girl” by dictionary definition, but in real life, they are just girls who have an innocent but flirtatious personality. There are many types of nymphets such as classic, school girl, angelic, grunge, etc. And no, nymphets don’t condone pedophilia or romanticize Lolita.

A person who doesn't realize they are transgender yet, or is in denial; an undeveloped transgender person. When they realize, it's referred to as the "egg cracking."

A sexualized pre-adolescent girl.

Coined by Vladimir Nabokov, author of Lolita.

The term 'Nymphet'(And the lesser used term Faunet) was popularized by Vladamir Nobovic through his controversial novel 'Lolita' published in 1955. It is commonly used to describe a 'Sexualised adoleacent girl', normally early on in puberty.
The term derives from the greek word 'Nymph' meaning beautiful woman. Basically a nympet is a lusty, gorgeous, young girl.
Nymphet can be applied to girls aging from nine to fourteen which is the age 'Lolita's main character Humbert Humbert lusted after.