Pitiless
ahd-5
adjective.
Having no pity; merciless.
The Century Dictionary and Cyclopedia
Without pity; hard-hearted.
Exciting no pity; unpitied.
Synonyms
Merciless, cruel, ruthless, inexorable, unmerciful, unpitying.
the GNU version of the Collaborative International Dictionary of English
adjective.
Destitute of pity; hard-hearted; merciless
adjective.
Exciting no pity.
Wiktionary, Creative Commons Attribution/Share-Alike License
adjective.
having, or showing, no
pity
;
merciless
adjective.
having no
kindly
feelings
;
unkind
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adjective.
without mercy or pity
adjective.
deficient in humane and kindly feelings
Word Usage
"Zoology, he said, and those sciences which deal with man, continually insist upon what they call the pitiless law of struggle for existence."