RichThesaurus
inimicable
vs
viperous
inimicable
adj
(rare) Inimical (harmful, hostile).
viperous
adj
venomous, malicious or treacherous
of or pertaining to a viper
How often have the words
inimicable
and
viperous
occurred in a corpus of books?
(source:
Google Ngram Viewer
)