Simple past tense and past participle of escalate.(verb)
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Use "escalated" in a sentence
"Dan Moore during his term escalated more, and sort of hit the apex during my term."
"I called back and told them it was not acceptable so they again escalated my case and ended up getting my part to me on February 10th."
"But the ugly reality is that as governor for only two-and-a-half years, Sarah Palin escalated a bloody aerial wolf-slaughter campaign that continues to this very day."