monstrosity
Concise Oxford English Dictionary © 2008 Oxford University Press:
monstrosity/mɒnˈstrɒsəti/
▶noun (pl. monstrosities)
- 1 something very large and unsightly.
■ a grossly malformed animal or plant.
- 2 something which is outrageously evil or wrong.
'monstrosity' also found in these Oxford entries:

