As nouns the difference between nymphe and nymphet
is that nymphe is nymph while nymphet is (obsolete) a small nymph.
nymphe
English
Noun
(rare, or, archaic)
----
nymphet
English
Alternative forms
* nymphette
Noun
(
en noun)
(obsolete) A small nymph.
* 1612 (Michael Drayton), (Poly-Olbion) I. xi. Argt. 171:
*:Of the nymphets sporting there In Wyrrall, and in Delamere.
A sexually attractive girl or young woman.
Usage notes
More common than the alternative spelling nymphette, which uses the more standard feminine suffix .
Synonyms
* jailbait, lolita, nymph
References
* The changing English language, Brian Foster, 1968, pp. 185–186 – on spelling nymphet versus nymphette