Those letters spell escape.
butterbeer
werewolf
Gillyweed
The letters 'lmrauof' unscramble to spell the word forumla.The next possible longest words are armful and formal.
Elixir of life
Madam Hooch.
Vernon Dursley
cuiryotis -> curiosity
hiss and behave grand
Peppermint toads
Tom Felton works.
Blast-Ended Skrewt