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Use "disagreer" in a sentence
"Even though I was the 'disagreer' here, I found that I really learned from reading the comments."
"His true belief is that disagreement with him isn't mere disagreement, but marks the disagreer as one that is unjust, uncouth, depraved, and unworthy of consideration."
"Jonah's right; St. Andrew sees any disagreement at all as grounds for condemning the disagreer as about a half-step short of Nazis."