Definition of "pitiless" [pit•i•less]

• Having no pity; merciless. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Zoology, he said, and those sciences which deal with man, continually insist upon what they call the pitiless law of struggle for existence."
• "Whatever His aim, it had been past expression pitiless of Him, Him who had at His command thousands of pleasanter ways in which to help her, thus to drive a poor unhappy girl to extremities: one, too, whose petition had not been prompted by selfish ends alone."
• "The silence of gloom is merciful, shrouding one as with protection and breathing a thousand intangible sympathies; but the bright White Silence, clear and cold, under steely skies, in pitiless."