nongregarious vs unneighbourly

nongregarious

adj

  • Not gregarious; solitary. Compare ungregarious. 

unneighbourly

adj

  • Not neighbourly; antisocial. 

adv

  • In a way that is not neighbourly. 

How often have the words nongregarious and unneighbourly occurred in a corpus of books? (source: Google Ngram Viewer )