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Use "uncommonness" in a sentence
"To the contrary, it is the uncommonness of such mobilization that draws attention and makes the mobilization effective."
"I can really make sense of your ungrammaticality judgment only as an aversion against the constructions excessive uncommonness (use of “whom” + overt relative pronoun in an object relative clause, which also seems to have become sort of uncommon) … Are “the boy to whom I gave the gift” and “the man whom I saw” really that much better for you?"
"But I am not common, and by cleaving to me and my leadership you bask in the glory of my uncommonness."