An anagram is a word or phrase that you can mix up to spell another word or phrase (think “I am Lord Voldemort”). Here’s a list of others that you may have missed!
"Albus Dumbledore" is an anagram of "blamed old Rubeus." What could the Hogwarts gamekeeper have done that Dumbledore blamed him for? Perhaps it goes as far back as Hagrid's third year at Hogwarts when he was expelled for being suspected of opening the Chamber of Secrets.
"Arthur Weasley" is an anagram of "we salute Harry." We know that Mr. Weasley fully supports Harry on his quest, so the anagram could mean this. However, in military circles, a salute can be given when honoring the dead. (Thanks to Megan.)
"Dean Thomas" is an anagram of "man so hated." Poor Dean – maybe he just has a very unfortunate name. (Thanks to jwadsworths.)
"Dolores Jane Umbridge" is an anagram of "Dumbledore goes in jar." "Dumbledore" means "bumblebee" in Old English. Rita Skeeter was a beetle and ended up in a jar. Perhaps this hints at Rita's biography of Albus? Also, an urn is a type of jar where they place the ashes of a cremated body. And Dumbledore's tomb burst into green flame, so his body was cremated. (Thanks to Geoff.)
"Harry James Potter" is an anagram of "major threat Persy." Yes, Percy is really spelled with a C, but this could be much like the "Severus Snape/persues Evans" anagram. Interesting, interesting...
"Harry Potter" is an anagram of "try hero part." We know Harry likes to "play the hero."
"Irma Pince" is an anagram of "I'm a prince." Could the "vulture-like" librarian be related to Snape? Both are described as having sharp features and a short temper...
"Ollivander" is an anagram of "an evil lord." Is there something Jo never told us?
"Peter Pettigrew" is an anagram of "tip: pet we regret." This really speaks for itself – the Weasleys probably regret keeping Scabbers as a pet for so long and not knowing or realizing that he was an Animagus, even with his abnormally long lifespan. (Thanks to Megan.)
"Remus Lupin" is an anagram of "primus lune." Primus comes from the Latin word meaning "first," "beginning," or perhaps "full." Lune is the French word for "moon." Lupin turns into a werewolf when there is a full moon. Coincidence? (Thanks to Jenny.)
"Romilda Vane" is an anagram of "love in a dram." A dram is a unit of measurement. Very appropriate for the girl who tries to slip Harry a love potion. (Thanks to Frank and V.K.)
"Severus Snape" is an anagram of "Perseus Evans," "persues Evans," or "save pureness." The first anagram, "Perseus Evans," could mean several things. Perseus was a character in myth that, to put it briefly, went on a courageous quest and ended up killing a sea monster sent by the god Poseidon to save the princess (Lily?). Also, the character Medusa is linked with the legend of Perseus. Anyone who looked directly at Medusa was turned to stone. Can you say "basilisk"? Perseus also married Andromeda, which, as we learn in Book 5, is the name of Tonks's mother. Naturally, the Evans part could mean either Snape is related to Lily or had a relationship with her. The second anagram, "persues Evans," could mean that Snape went after Lily, either to kill her or to have a relationship with her. The word is spelled "pursues," but this could be a deliberate misspelling. As for the third anagram, "save pureness"... enough said.
"Tom Marvolo Riddle" is an anagram of "I am Lord Voldemort." Obviously, this one has already been given much importance, but it just goes to show that a lot of information can be held in anagrams.
"Tom Marvolo Riddle" is an anagram of "immortal, odd lover." This is something more than just coincidence – because of the seven Horcruxes he created, Voldemort thought he was immortal. Moreover, Horcruxes are uncommon and rare, and we all know that Voldemort has a fixation with trophies, cups, and treasured possessions, so "odd lover" is applicable to him. He also loves such "odd" things as immortality, power, and hating love. (Thanks to Menka.)
"Hogwarts" is an anagram of "ghost war." Is this referencing a battle between the ghosts of Hogwarts a long time ago? Either that or perhaps the anagram is meant figuratively, saying that the war will not be seen by the teachers or students. It could also mean a lot of people will die in the Battle of Hogwarts. (Thanks to Alex.)
"The Lightning Struck Tower" is an anagram of "the glowing stricken truth." The word "glowing" could represent the Dark Mark that was placed above the infamous tower in Half-Blood Prince. The Dark Mark is used to show that someone within the area has been killed by one of Voldemort's followers. (Thanks to Aarif.)
"Platform nine and three-quarters" is an anagram of "Frequent trains ran to help dream." The train reference speaks for itself. Also, maybe this coincidentally refers to Harry's childhood dream coming true when he was able to live a new life away from the Dursleys at Hogwarts. (Thanks to Courtney, Chris, and Sarah.)
"Harry Potter and the Sorcerer's Stone" is an anagram of "treachery rests on transported hero." Probably coincidental, but it's interesting anyway! (Thanks to Tyler.)
"Harry Potter and the Order of the Phoenix" is an anagram of "portrayed orphaned hero for the next hit." Harry, the orphaned hero, is back for the next hit book! (Thanks to Savreet.)
"Harry Potter and the Half-Blood Prince" is an anagram of "Halt! Interbred arch-foe lord not happy." This speaks for itself. Thanks to Courtney.)
"The children's author J.K. Rowling" is an anagram of "hint: her skill conjured Hogwart!" Very true! And another funny coincidence. Thanks to Courtney.)
"Daniel Radcliffe, Rupert Grint, Emma Watson" is an anagram of "Cue fine new film drama starring Potter lad." While this doesn't hold any significance to the books, this anagram is an interesting coincidence. (Thanks to Courtney.)
"Erised stra ehru oyt ube cafru oyt on wohsi" (inscription on the Mirror of Erised) is an anagram of "Trust what you see a hero inscribed for you." When read backward, the inscription reads, "I show not your face but your heart's desire." This anagram shows that the cryptic writing on the mirror could have more than one meaning... Also, "Erised" backward is "desire." (Thanks to Ralph.)
"Mike Newell's 'Harry Potter and the Goblet of Fire'" is an anagram of "enthralling film, yet we prefer to read the books!" This is probably true for most fans! (Thanks to Mey.)