A feeling that is indescribable to those who have not felt it, and needs no description to those who have. That desolate feeling of being left out, left behind, and being all alone forever. This not only applies to girlfriends(though they bring the strongest effect) but also major life changes - graduation, deaths, etc... It is that hole that appears in your heart, which cannot be filled by your efforts alone. In such a case, crying occurs and is often encouraged as it heals the soul.

lil mad is like big mad but the opposite, you mad but not mad to the extent of pullin somthin

Adjective
1. An adjective describing one who finds him or her self looking up words such as lonely on urbandictionary.com because he or she misses his or her loved one, or has not yet found one to be named as such.

-or-

2. 12:42 a.m.: Sitting in front of a computer in the dead of night, wondering where the girl that you've fallen madly in love with is and most of all, why she's not here, next to you. Usually this condition can be cured by random yet enthusiastic reiteration of the phrase: "I love you, Diana!"

A powerful feeling of emptiness and isolation; feeling disconnected and alienated from other people.

One of the saddest feelings possible. It can be from not having a partner, not having friends, or not having either. A lonely person can be very sad, and won't have anyone to comfort them. It can be hard to break out of loneliness. Some people are lonely for years at a time, or maybe just one night.

Unloved. Unhappy. In pain, not just mental but physical too.

Having a tiny little mental hole inside of you that keeps you from being happy. You can try to fill that empty spot with rainbows and happy thoughts... but happiness will almost always keep leaking out of that hole. Worst of all, the longer you have that hole, the bigger it seems to get. Stupid hole...