Definitions

1. noun

the state of being alone or without companionship

“Her loneliness was only made worse by being away from her family for so long.”

2. noun

a feeling of sadness or grief caused by the absence of someone or something

“The news of his passing left a deep sense of loneliness in the community.”

3. adjective

describing a state of being alone or without companionship

“The lonely child sat by the window, staring out at the world outside.”