zaostrzać

Etymology
From.

Verb

 * 1)  to sharpen, to whet
 * 2)  to tighten, to toughen
 * 3)  to exacerbate
 * 4)  to exacerbate
 * 5)  to sharpen
 * 6)  to sensitize
 * 7)  to spice up
 * 8)  to sharpen up
 * 9)  to tighten up, to toughen up
 * 10)  to exacerbate
 * 11)  to exacerbate
 * 12)  to get sensitized
 * 1)  to spice up
 * 2)  to sharpen up
 * 3)  to tighten up, to toughen up
 * 4)  to exacerbate
 * 5)  to exacerbate
 * 6)  to get sensitized
 * 1)  to tighten up, to toughen up
 * 2)  to exacerbate
 * 3)  to exacerbate
 * 4)  to get sensitized
 * 1)  to get sensitized
 * 1)  to get sensitized