enormity

noun
enor·​mi·​ty | \ i-ˈnȯr-mə-tē How to pronounce enormity (audio) \
plural enormities

Definition of enormity

1 : an outrageous, improper, vicious, or immoral act the enormities of state power— Susan Sontag other enormities too juvenile to mention— Richard Freedman
2 : the quality or state of being immoderate, monstrous, or outrageous especially : great wickedness the enormity of the crimes committed during the Third Reich — G. A. Craig
3 : the quality or state of being huge : immensity the inconceivable enormity of the universe
4 : a quality of momentous importance or impact the enormity of the decision