To be dismissive is to be indifferent and a little rude. Being dismissive is a sign of disrespect.

If you're dismissive, you show little consideration for others. If a teacher laughs at a student's earnest answer to a question, that's dismissive. An employer throwing a resume in the trash without reading it? Dismissive. People are dismissive to others they think are beneath them. You can also be dismissive to ideas and suggestions. It's like waving someone or something away and saying, "whatever."

Definitions of dismissive

adj showing indifference or disregard

“a dismissive shrug”
“the firm is dismissive of the competitor's product”
“'chronic fatigue syndrome' was known by the dismissive term 'housewife syndrome'”
not having or showing interest

adj stopping to associate with

“they took dismissive action after the third violation”
rejecting or tending to reject

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