Adjective : an unsociable boardinghouse.    From Dictionary.com. 

Yes, his present feeling of unsociableness went deeper than mere fatigue: it was a kind of deliberate turning-in on himself.    From Wordnik.com.  [Ultima Thule] Reference

Snuffy was telling me they like him real well, considering his unsociableness.    From Wordnik.com.  [Lucy Maud Montgomery Short Stories, 1896 to 1901] Reference

"This is so much better than gossip, unsociableness, sullen silence, and quarreling.".    From Wordnik.com.  [The Cyclopedia of the Colored Baptists of Alabama Their Leaders and Their Work] Reference

All this apparent unsociableness is merely shyness -- the national characteristic of the Englishman.    From Wordnik.com.  [Character] Reference

There are other qualities besides these, which grow out of the comparative unsociableness of the Englishman.    From Wordnik.com.  [Character] Reference

Her air of reticence and unsociableness intrigues Mikiya, who simply believes that she is a misunderstood girl with a kind heart.    From Wordnik.com.  [Anime Nano!] Reference

But it was only those who knew him intimately that could venture, after long separation, to break in upon this seeming unsociableness and hauteur.    From Wordnik.com.  [James Fenimore Cooper American Men of Letters] Reference

And under the force of this tradition we idealise the rugged and unmanageable, we find something heroic in rough clothes and hands, in bad manners, insensitive behaviour, and unsociableness.    From Wordnik.com.  [An Englishman Looks at the World] Reference

On the way the widow addressed very polite reproaches to her neighbour on his unsociableness, and the ecclesiastic expressed his great surprise at not having up to the present known such a distinguished parishioner of his.    From Wordnik.com.  [Bouvard and Pécuchet A Tragi-comic Novel of Bourgeois Life] Reference

His stature was reduced, his unsociableness seemed modified; he now looked to be a smallish, friendless person, as if some ownerless dog had darted through the street, and heard a kind chirp at the tavern door, where his reception had been stones.    From Wordnik.com.  [The Entailed Hat Or, Patty Cannon's Times] Reference

Cousin Ola thought of the pitiful part he had been playing all evening; his unsociableness weighed so much upon his mind that he answered -- the very stupidest thing he could have answered, he thought, the moment the words were out of his lips -- "I'm so sorry that I can't sing.".    From Wordnik.com.  [Tales of Two Countries] Reference

For some time, therefore, he drank with measured scrupulousness; and it was with no small degree of anxiety that Bunce plied him with the bottle -- complaining of his unsociableness, and watching, with the intensity of any other experimentalist, the progress of his scheme upon him.    From Wordnik.com.  [Guy Rivers: A Tale of Georgia] Reference

Anyone who has been in close contact with country life can readily imagine the ignorance, bigotry, prejudice, unfairness and unsociableness of the population; the tendency to cling to the past no matter what its shortcomings; the unwillingness to venture into even the rosiest future which involves change.    From Wordnik.com.  [The New Education A Review of Progressive Educational Movements of the Day (1915)] Reference

In a word, to his Superiours he was Dutifully respectfull without Ceremony or Officiousnesse; to his equalls he was Discreetly respectful, without neglect or unsociableness; and to his Inferiours, (whom indeed he judged.    From Wordnik.com.  [Characters from 17th Century Histories and Chronicles] Reference

Nature employs the “unsociableness of men” to motivate moral progress; thus war is a means by which nature moves states “to take the step which reason could have suggested to them even without so many sad experiences ” that of abandoning a lawless state of savagery and entering a federation of peoples in which every state, even the smallest, could expect to derive its security and rights not from its own power or its own legal judgment, but solely from this great federation (Foedus Amphictyonum), from a united power and the law-governed decisions of a united will” (47).    From Wordnik.com.  [World Government] Reference

His friend, Mr. Becher, frequently expostulated with him on this unsociableness; and to his remonstrances, on one occasion, Lord Byron returned a poetical answer, so remarkably prefiguring the splendid burst, with which his own volcanic genius opened upon the world, that as the volume containing the verses is in very few hands, I cannot resist the temptation of giving a few extracts here: ” “Dear Becher, you tell me to mix with mankind, ”.    From Wordnik.com.  [Life of Lord Byron]