unattended

adjective
UK /ˌʌn.əˈten.dɪd/
US /ˌʌn.əˈten.dɪd/

Left alone with no one watching or taking care of it.

The little dog sat unattended outside the shop.


OTHER MEANINGS

2. Not dealt with or taken care of yet.

The pile of letters was left unattended for days.

3. Done or happening without anyone being present to help.

The machine ran unattended all night.

4. Not accompanied by another person.

She arrived unattended at the party.