RichThesaurus
lethargic
vs
torporific
lethargic
adj
indifferent, apathetic
sluggish, slow
torporific
adj
Inducing torpor; tending to cause apathy or lethargy.
How often have the words
lethargic
and
torporific
occurred in a corpus of books?
(source:
Google Ngram Viewer
)