A male given name from Japanese

Extremely or shockingly ugly. / Having a very unpleasant or frightening sound / Hateful; shocking. / Morally offensive; shocking; detestable.

A place to hide. / A hidden headquarters or place to return to.

In a hideous manner. / (degree) To an extreme degree

The state of being hideous; extreme ugliness

plural of hideout

plural of hideosity

(uncountable) The state or condition of being hideous; extreme ugliness. / (countable) Something hideous.

plural of hideousness

(slang) Hideous, ugly.