Nicknames

Big D - What Dudley's Friends calls him.

Diddydums - What Dudley's Mother calls him.

Dinky -  What Dudley's Mother calls him.

Dung - What people call Mundungus.

Goblin - Crusher - What Cornelius Fudge is called in the Quibbler.

He Who Must Not Be Named -  What wizards and witches refer to

Voldemort as. Also called You know who.

Hogwarts High Inquisitor - Dolores Umbridge.

Ickle Diddykins -  What Dudley's Mother calls him.

Moony - Lupin's nickname at school.

Padfoot - Sirius' nickname at school.

Popkin - What Dudley's Mother calls him.

Prongs- James nickname at school.

Snivellus - Nickname for Snape made by Sirius.

Snuffles - Nickname Sirius used by Harry and his Friends so no one knows who they are talking about.

Wormtail - Peter Pettigrew's Nickname in School. Voldemort Refers to him as Wormtail.

You know who - What people refer to Voldemort as.