DictionarymonstrosityUgly or abnormal thing
noun

monstrosity

mahn-STRAH-suh-tee/mɑːnˈstrɑːsəti/

Something shockingly ugly or abnormal.

The oversized potato is a knobby monstrosity beside the two smooth, ordinary ones.

A grotesquely overgrown potato with fused bulbous lobes, deep creases and crooked knobby projections dwarfs two ordinary smooth potatoes beside it, making its unnaturally distorted form immediately apparent.
Etymology

The pieces describe a monstrous or strange quality, but the noun also came to name a thing displaying that quality. Its early English use for abnormal growth connects directly with something shockingly misshapen.

In context

Town Meeting TV10:03
building a gilded and let's face it ghastly las vegas style monstrosity of pulsating illuminated fountains on hardscape and a completely redundant performance space
Burlington City Council edit 03 25 2019

More examples

  • She calls my bright orange couch a monstrosity.
  • The garden produces a few twisted monstrosities among the carrots.
  • Critics describe the proposed law as a legal monstrosity.

Forms

monstrosity · monstrosities

monstrous adjective — Shockingly ugly, abnormal, or outrageously wrong.

Similar words

eyesore
Emphasizes an ugly appearance that spoils the surrounding view.
abomination
Emphasizes disgust or moral rejection rather than abnormal appearance.