supervision

C1
UK /ˌsuːpəˈvɪʒn/US /ˌsuːpərˈvɪʒn/

Meaning

noun
the work or activity involved in being in charge of somebody/something and making sure that everything is done correctly, safely, etc.
Very young children should not be left to play without supervision.

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Very young children should not be left to play without supervision.

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