impuberal
adjUK /ɪmˈpjuːbəɹəl/
Etymology From the stem of Latin impubes, from im- + pubes (“mature age, puberty”).
1
Rare Immature; not having come to puberty.
- Another revelation of impuberal softness [...] was afforded by a photo of her in which she sat in the buff on the grass, combing her sun-shot hair and spreading wide, in false perspective, the lovely legs of a giantess.1972, Vladimir Nabokov, Transparent Things, McGraw-Hill, published 1972, page 41: