Loneliest is the word that is used to describe the feeling of being the only person in the world. When you are the loneliest, you are feeling very alone and unsupported.
He was the loneliest person in the room.
The loneliest thing in the world is being alone in the dark.
adjective
Unhappy because of feeling isolated from contact with other people.
adjective
(of a place or time) Unfrequented by people; desolate.
adjective
(of a person) Without companions; solitary.
1
This is the fear of being lonely.
2
Build the broken, Touch the lonely.
3
It contributes to the lonely feeling of the image.
4
Porn is the medium of the lonely masturbator.
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He was banished into the lonely island.
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He was the lone foreigner in the group.
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The lone sentence in the lead is an oddity.
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But, the forest was lonely and the dragons were agitated.
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It is the birthplace of the Lone Star Flag of Texas.
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In the desert camel the companion of the lonely wanderer.