Wiktionary
a. 1 Exhibiting retention of juvenile characteristics in the adult. 2 (context informal English) babyfaced.
WordNet
adj. of or relating to or characterized by neoteny; "neotenic development" [syn: neotenic]
Usage examples of "neotenous".
While she was identifying the neotenous developments, she would also be trying to guess what she would have when they were eliminated.
Her people lived at the coast, feeding on the soft-fleshed descendants of neotenous crabs.
Canopy people were shopping or strolling, most of them couples who at least looked young, although there were very few children present, and those I saw might well have been neotenous adults in their latest body image, or even androform pets programmed with a few childlike phrases.
And a smaller, more neotenous brain enhanced his synaptic firing speed -- a determinant of intelligence.
And Jack Leary continued to be the symbol of Neotenous Youth and the target of Adult rage.