RichThesaurus
fretful
vs
sibilatory
fretful
adj
Irritable, bad-tempered, grumpy or peevish.
Unable to relax; fidgety or restless.
sibilatory
adj
hissing; sibilant
How often have the words
fretful
and
sibilatory
occurred in a corpus of books?
(source:
Google Ngram Viewer
)