massiveness

(uncountable, usually)The property of being massive.

1914, H. G. Wells, “The Common Sense of Warfare” in An Englishman Looks at the World (U.S. title: Social Forces in England and America), New York: Harper & Brothers, § 2, pp. 163-164, The progress of invention makes both the big ship and the army crowd more and more vulnerable and less effective. A new phase of warfare opens beyond the vista of our current programmes. Smaller, more numerous and various and mobile weapons and craft and contrivances, manned by daring and highly skilled men, must ultimately take the place of those massivenesses.