Definition - a person who leads a secluded or solitary life
Along with solitary, solitude, and solo, solitudinarian comes from the Latin word solus, meaning “alone.” Just because you’re person who leads a secluded or solitary life doesn’t mean that you can’t enjoy having a lengthy obscure word to describe yourself with.
The place was upon the whole comfortable, and might suit a solitudinarian who had humility enough to be reconciled to such a situation.
— John Robinson, Audley Fortescue; or the victims of frailty, 1796