What does the word intensify mean?

Usage examples for intensify

  1. She pulled herself up indeed with the thought that it had inevitably looked, as beautifully as one would, into thousands of faces in which one might one's self never trace it; but just the odd result of the thought was to intensify for the girl that side of her friend which she had doubtless already been more prepared than she quite knew to think of as the " other," the not wholly calculable. – The Wings of the Dove, Volume 1 of 2 by Henry James
  2. In 1777 General Howe did not blow prisoners into fragments at the cannon's mouth as was done in 1855 in Hindostan; but the story of Dr. Cornelius' imprisonment in New York City that now passes into history for the first time proves how English vindictiveness could intensify. – Journal of Dr. Elias Cornelius, a Revolutionary Surgeon by Elias Cornelius
  3. We did not intensify our grief by darkening the house and covering ourselves with black crape, but wore our accustomed dresses of chastened colors and opened all the blinds that the glad sunshine might stream in. – Eighty Years And More; Reminiscences 1815-1897 by Elizabeth Cady Stanton