Definition of "neotenous" [neotenous]

• Exhibiting retention of juvenile characteristics in the adult. (adjective)
• Babyfaced. (adjective)

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• "Was there a neotenous giant-brained super-race that lived in Africa 10,000 years ago?"
• "But somewhere in the establishment of our cultural system, we have learned to depress our neotenous characteristics as we age for behaviors that we identify as mature."
• "There is a biological reason we don't lose our neotenous playful characteristics as we age but we need to embrace these traits instead of shunning them."