Rigamarole is a 10 letter English word. It's valid Words with friends word worth 16 points.
You can make 517 anagrams from letters in rigamarole (aaegilmorr).
If I had not known you had studied law, not for a moment would that rigamarole lead me to suspect it.
Of course, under that rigamarole I knew what was doing—orders from headquarters—and more to follow.