Douglas Harper's Etymology Dictionary
frumious
1871 ("Jabberwocky"), coined by Lewis Carroll, who said it was a blend of fuming and furious. He used it later in "The Hunting of the Snark" (1876).
Usage examples of "frumious".
She sprawled in her largest chair and played with Frumious Bandersnatch.
She drifted off muttering something about beware the frumious Bandersnatch and the Jubjub bird and the Jabberwock.