Abomination

"The Abomination" is a title used by Daleks to refer to something which is of extreme disgust to them.

Things which have been referred to as the Abomination are:
 * The Special Weapons Dalek. (DWN: Remembrance of the Daleks)
 * The Bad Wolf entity. (DW: The Parting of the Ways)
 * Dalek Caan after he saw Time itself. (DW: The Stolen Earth, Journey's End)

It is also the name of a living painting, see The Abomination.