Synonyms of 'unattended'
1 abandonedDictionary, left alone, unguarded
An unattended bag was spotted near the platform at Gatwick.
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When you are alone, you are not with any other people.
He was all alone in the middle of the hall.
Thesaurus for unattended from the Collins English Thesaurus
When people or things are left unattended , they are not being watched or looked after.