lonely

adjective
UK /ˈləʊnli/
US /ˈloʊnli/

Feeling sad because you are all alone.

She felt lonely when her best friend moved away.


OTHER MEANINGS

2. A place that is far away from other people or things.

They drove along a lonely road in the countryside.

3. A time when you are by yourself and feel sad about it.

He spent a lonely evening waiting for a phone call.

4. Something that makes you feel sad because it seems to have no friends or company.

The lonely little house stood at the edge of the woods.