RichThesaurus
nonfriendly
vs
unkindly
nonfriendly
adj
Not friendly.
unkindly
adj
Not kind, lacking in friendliness, warm-heartedness or sympathy.
adv
In an unkind manner.
How often have the words
nonfriendly
and
unkindly
occurred in a corpus of books?
(source:
Google Ngram Viewer
)