1. 1. Without companions; lone.
   2. Characterized by aloneness; solitary.
2. Unfrequented by people; desolate: a lonely crossroads.
3. 1. Dejected by the awareness of being alone. See synonyms at alone.
   2. Producing such dejection: the loneliest night of the week.

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.