Password

Passwords are used throughout Hogwarts Castle to prevent the wrong people from entering places, including the House Commonrooms, Dumbledore's office, and the Prefects' bathroom. Passwords often change on a frequent basis.

While Sir Cadogan was guarding the Gryffindor Commonroom in the Fat Lady's abscence he changed passwords so frequently (and used so many odd words) that Neville Longbottom had to write them down. Neville later lost his list, allowing Sirius Black to enter the Gryffindor Tower.

Some known previously used passwords include:

Gryffindor Commonroom:


 * abstinence
 * banana fritters
 * baubles
 * caput draconis
 * dilligrout
 * fairy lights
 * flibbertigibbet
 * fortuna major
 * Mimbulus mimbletonia
 * oddsbodikins
 * pig snout
 * quid agis
 * scurvy cur
 * tapeworm
 * wattlebird

Dumbledore's Office


 * Acid Pops
 * cockroach cluster
 * Fizzing Whizbee
 * sherbet lemon (UK) / lemon drop (US)
 * toffee eclairs

Prefects' Bathroom


 * pine fresh

Slytherin Commonroom


 * pure-blood