Monstrosity (noun)

1. An extremely ugly or grotesque object or creature.
2. Something that is monstrously large or impractical.
3. A thing that is monstrously evil or wicked.

Origin:

From the latin word "monstrum" meaning "monster" or "portent".

Examples:

1. The new building was a monstrosity, out of place with the surrounding architecture.
2. The creature was a monstrosity, a grotesque blend of different animals.
3. The new policy was a monstrosity, as it would have detrimental effects on the citizens.
4. The monstrosity of the event left him in shock.
5. The monstrosity that was created in the lab was too dangerous to be released.