The trait of being imperious and overbearing(noun)
WordNet. Princeton University. 2010.
Use "domineeringness" in a sentence
"He was so dictatorial that his fellow directors were left in cabal over the increasing domineeringness of old Forsyte, which they were far from intending to stand much longer, they said."
"He would never have thought about talking about his mother's domineeringness, or his feelings about Lucy Mercer."
"'Because I said he didn't care -- and he doesn't, it's only his domineeringness that's hurt --' she said, her mouth pulled awry by her weeping, all the time she spoke, so that he almost smiled, it seemed so childish."