When you're lonesome, you feel sad about being by yourself, and you miss the company of other people. It's entirely possible to feel lonesome even when you're in a crowd.

Living alone on an island might sound appealing sometimes, but it would probably be pretty lonesome in reality. Good elementary school teachers pay attention to which kids look a little lonesome during recess, especially at the beginning of the school year, and match them up with a pal. Lonesome means "lonely," although it's uncommon outside of the US.

Definitions of lonesome

adj marked by dejection from being alone

lonesome when her husband is away”
“spent a lonesome hour in the bar”
affected or marked by low spirits

adj being the only one; single and isolated from others

“a lonesome pine”
lone, only, sole, solitary
existing alone or consisting of one entity or part or aspect or individual

Sign up, it's free!

Whether you're a student, an educator, or a lifelong learner, Vocabulary.com can put you on the path to systematic vocabulary improvement.