inimical vs unneighbourly

inimical

adj

  • Unfriendly, hostile. 

  • Harmful in effect. 

unneighbourly

adj

  • Not neighbourly; antisocial. 

adv

  • In a way that is not neighbourly. 

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