Adjective
1. lacking companions or companionship;
"he was alone when we met him""she is alone much of the time""the lone skier on the mountain""a lonely fisherman stood on a tuft of gravel""a lonely soul""a solitary traveler"2. marked by dejection from being alone;
"felt sad and lonely""the loneliest night of the week""lonesome when her husband is away""spent a lonesome hour in the bar"3. separated from or unfrequented by others; remote or secluded;
"a lonely crossroads""a solitary retreat""a trail leading to an unfrequented lake"4. enjoyed or performed alone;
"a lonely existence""his lonely room""took a solitary walk""enjoyed her solitary dinner""solitary pursuits such as reading"