unchildlike
/ʌnˈtʃaɪldlaɪk/
adjective
- Not typical of or suitable for a child; mature, serious, or sophisticated beyond what is expected for a child's age.
- He spoke with an unchildlike calmness that made the adults listen carefully.
- Her unchildlike understanding of complex politics surprised everyone.
- The movie's dark themes felt unchildlike for a cartoon aimed at young audiences.
- Lacking the innocence, playfulness, or simplicity associated with childhood.
- The painting had an unchildlike darkness that disturbed the gallery visitors.
- Her unchildlike behavior at the playground made the other kids keep their distance.
- The child's unchildlike expression showed a weariness beyond his years.