RichThesaurus
nonfriendly
vs
pitiless
nonfriendly
adj
Not friendly.
pitiless
adj
having no kindly feelings; unkind
having, or showing, no pity; merciless, ruthless
How often have the words
nonfriendly
and
pitiless
occurred in a corpus of books?
(source:
Google Ngram Viewer
)