noun
a person or thing that is unresponsive
adjective
describing someone or something that does not respond or react
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The patient remained unresponsive to the medication despite multiple attempts to adjust the dosage.
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She tried calling him multiple times but he was unresponsive to her calls.
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I texted her about the party but she's been totally unresponsive.
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The government's unresponsive attitude towards the citizens' needs is causing frustration among the population.