What does "hideousness" mean?

The state of being hideous; extreme ugliness

Hideousness

Common synonyms include: atrociousness, atrocity, deformity, disfigurement, eeriness, grotesqueness.

noun

noun ·Rare ·Advanced level

Noun

From Middle English hidousnes, hidousnesse, hidowesnesse, hydousnes, hydousnesse, hydusnes; equivalent to hideous + -ness.