Definition of "unchildish" [unchildish]

• Not childish. (adjective)

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• "The stern and already rigid profile of her face looked as though chiselled of marble too, and the smile on her pale lips was full of an immense unchildish misery and sorrowful appeal."
• "But now she quite gave up all effort, now it was a grin, a broad grin; there was something shameless, provocative in that quite unchildish face; it was depravity, it was the face of a harlot, the shameless face of a"
• "There was just the suggestion of a flush as she mentioned the name, as if she had some unchildish memory."