RichThesaurus
torpedinous
vs
unimpressionable
torpedinous
adj
Exerting a benumbing influence; stupefying; dull; torpid.
unimpressionable
adj
Not impressionable.
How often have the words
torpedinous
and
unimpressionable
occurred in a corpus of books?
(source:
Google Ngram Viewer
)