
unbeaufsichtigt
unsupervised
Without supervision or control by a responsible person; left alone.
Lassen Sie Ihr Gepäck am Flughafen niemals unbeaufsichtigt.
Never leave your luggage unattended at the airport.
unsupervised
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unsupervised
Without supervision or control by a responsible person; left alone.
Lassen Sie Ihr Gepäck am Flughafen niemals unbeaufsichtigt.
Never leave your luggage unattended at the airport.
The word is made up of the prefix 'un-' and 'beaufsichtigt' (supervised). 'Beaufsichtigt' is the past participle of the verb 'beaufsichtigen' (to supervise). So 'unbeaufsichtigt' literally means 'not supervised.'
Die spielenden Kinder waren für einen Moment unbeaufsichtigt.
The children playing were unsupervised for a moment.
The most common and important construction with this word is 'jemanden/etwas unbeaufsichtigt lassen' (to leave someone/something unattended). This pattern is often used in warnings or safety notices.
Man sollte kleine Kinder niemals unbeaufsichtigt in der Nähe von Wasser lassen.
You should never leave small children unattended near water.
Common nouns that occur in connection with 'unbeaufsichtigt' (unsupervised/unattended) are things that need protection or control. These include 'Kinder' (children), 'Gepäck' (luggage), 'Haustiere' (pets), or also 'ein offenes Feuer' (an open fire).
Lassen Sie Ihr Haustier an heißen Tagen nicht unbeaufsichtigt im Auto.
Do not leave your pet unattended in the car on hot days.
uncontrolled
Unbeaufsichtigt means that no responsible person is watching or attending to a process. Unkontrolliert, by contrast, describes the process itself as not being directed, checked, or controlled. A machine can therefore run unsupervised without being uncontrolled, or run uncontrolled even when someone is standing next to it.

Weil der Techniker den Raum verlassen hatte, lief die Maschine unbeaufsichtigt weiter.
Because the technician had left the room, the machine continued to run unsupervised.
Obwohl der Techniker danebenstand, lief die Maschine unkontrolliert weiter.
Although the technician was standing next to it, the machine continued to run uncontrollably.