neotenous

/niˈɑːtənəs/
adjective
  1. Having or showing the retention of juvenile features into adulthood.
    • The neotenous appearance of the panda, with its large eyes and round face, makes it seem cute to humans.
    • Many pet breeds have been selectively bred for neotenous traits that people find appealing.
    • Domestic dogs are more neotenous than wolves, with floppy ears and shorter snouts.
Antonyms