childproof

or child-proof

[ chahyld-proof ]
/ ˈtʃaɪldˌpruf /

adjective

resistant to being opened, tampered with, or operated by a child: a childproof medicine bottle.
made free of hazard for a child: a childproof home.
made safe from damage by children: a childproof living room free of breakable objects.

verb (used with object)

to make childproof: to childproof a home.

Origin of childproof

First recorded in 1955–60; child + -proof
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019