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childproof

[chahyld-proof] /ˈtʃaɪldˌpruf/
adjective
1.
resistant to being opened, tampered with, or operated by a child:
a childproof medicine bottle.
2.
made free of hazard for a child:
a childproof home.
3.
made safe from damage by children:
a childproof living room free of breakable objects.
verb (used with object)
4.
to make childproof:
to childproof a home.
Also, child-proof.
Origin
1955-1960
1955-60; child + -proof
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Word Origin and History for child-proof
adj.

1933, from child (n.) + proof (n.). As a verb by 1951.

Online Etymology Dictionary, © 2010 Douglas Harper
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