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Verb

 * 1) to sharpen, to point
 * 2)  to sharpen, to narrow down, to aggravate, to exaggerate
 * 3)  to taper
 * 4)  to get worse, to escalate, to come to a head
 * 1)  to get worse, to escalate, to come to a head
 * 1)  to get worse, to escalate, to come to a head