Cacodemon is a 9 letter English word. It's valid Words with friends word worth 20 points.
You can make 298 anagrams from letters in cacodemon (accdemnoo).
First recorded in 1585-95, cacodemon is from the Greek word kakodaímōn having an evil genius, ill-fated. See caco-, demon
Consequently, if Mrs Warren must needs be a demon, a bookmaker must be a cacodemon.