A person living in solitude for different reasons. Reasons can be introversion, religiousdiscipline, laziness, or just plain "gave-up-on-humanity-ism".
"You should beware of how much time you spend alone, dude. You're starting to become a hermit, and pretty soon we won't see you at all ... man."
I don't know how a Hermit is synonomous with loser or lazy but whatever.
Anyway Hermits are people who tend to not want to socialize with other humans all the time. Most spend their entire lives wandering the planet. Like loners they do tend to make friends, and associates, and can pretty much network with anyone, but they choose not to go any further than a hollow friendship. Though they do run in to the best plutonic relationships.
Hermits, and loners are not socially inept, but hermits tend to not like to stay in the same place for very long. Thus not permitting the time it takes to actually be in some kind of crappy group or something like that.
Hermits are alone. Though they are alone they have no problem with socializing with people, but they chose a life that leaves them alone.
Someone who enjoys doing things on their own away from groups. Hermits are always busy with so many things they want to do on their own that they rarely make time for social gatherings.
Many have high IQ's and are bored and unchallenged in social settings. They want to do what they want to do. Uninterrupted and unbothered. Often driven and very successful in knowledge and achievements in science & arts & philosophy (think Einstein)