Word parts monstrous + -ity Pronunciation (UK) IPA (key): /mɒnˈstrɒsɪti/ Audio (UK)(file) Noun Singular monstrosity Plural monstrosities (countable) A monstrosity is an organism that is showing an abnormal development. Synonym: monster (countable) A monstrosity is a monstrous person or thing. Synonym: monsterWikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads