Abomination

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

Things which have been referred to as the Abomination were:
 * The Special Weapons Dalek, said to be insane. (PROSE: Remembrance of the Daleks)
 * The Bad Wolf entity. (TV: The Parting of the Ways)
 * Dalek Caan after he saw time itself. (TV: The Stolen Earth, Journey's End)
 * The Abomination (The Only Good Dalek), a Dalek mutant that had been genetically altered to be passive and benign. (COMIC: The Only Good Dalek)

The Abomination (Mona Lisa's Revenge) refers to a sentient painting painted by Giuseppe di Cattivo. (TV: Mona Lisa's Revenge)