unsociable not inclined to society or companionship; "an unsociable nature...shy and reserved"; "generally unsociable except with intimate friends"; "unsociable behavior"; "an unsociable neighborhood"
sociality the tendency to associate with others and to form social groups; "mammals as a class are not strong on sociality"
alone radically distinctive and without equal; "he is alone in the field of microbiology"; "this theory is altogether alone in its penetration of the problem"; "Bach was unique in his handling of counterpoint"; "craftsmen whose skill is unequaled"; "unparalleled athletic ability"; "a breakdown of law unparalleled in our history"
antisocial,
asocial hostile to or disruptive of normal standards of social behavior; "criminal behavior or conduct that violates the rights of other individuals is antisocial"; "crimes...and other asocial behavior"; "an antisocial deed"
asocial given to avoiding association with others; "bears are asocial secretive animals"; "are you asocial or do you just enjoy living in the Antarctic?"
lone,
lonely,
solitary being the only one; single and isolated from others; "the lone doctor in the entire county"; "a lonesome pine"; "an only child"; "the sole heir"; "the sole example"; "a solitary instance of cowardice"; "a solitary speck in the sky"
