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English definition of “second childhood”

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second childhood

noun [S] uk   us  
a situation in which someone starts to behave like a child, especially because of mental weakness caused by old age: Her grandfather's in his second childhood and talks nonsense most of the time.
Translations of “second childhood”
in Chinese (Traditional) (尤因年老智力衰退造成的)第二童年期…
in Chinese (Simplified) (尤因年老智力衰退造成的)第二童年期…
(Definition of second childhood from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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