A form of denial, characterized by either passively showing indifference or disregard, or actively dismissing or rejecting ideas or evidence.(noun)
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Use "dismissiveness" in a sentence
"That dismissiveness is broken, every now and again, with a word (or, more commonly, and internal monologue) about his unspoken respect."
"While I think his ethical position is, if uninteresting, unexceptionable enough, his refusal to confront the political connection Foucault makes except with such bland dismissiveness is insufficient precisely because uninteresting."
"By contrast, you’ve adopted a general tone of near contempt and dismissiveness from the start (from the point where you more recent responded directly to me."