pitiless
[adjective]
Synonyms: merciless, callous, cold-blooded, cold-hearted, cruel, hardhearted, heartless, implacable, relentless, ruthless, unmerciful

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Antonyms: pitying
Contrasted words: compassionate, humane, sympathetic, clement, merciful, tender, warmhearted
Related Idioms: lacking bowels of compassion, without an ounce of pity
Related Words: coldhearted, hardhearted, heartless, ironhearted, marblehearted, stony, stonyhearted, uncompassionate, unfeeling, barbarous, brutal, cruel, cutthroat, inhumane, savage

[TahlilGaran] English Synonym Dictionary ▲

pit‧i‧less /ˈpɪtɪləs/ adjective

1. showing no pity and not caring if people suffer Synonym : cruel:
a pitiless tyrant
the pitiless bombing of Guernica

2. literary pitiless wind, rain, or sun is very severe and shows no sign of changing:
a night of pitiless rain
—pitilessly adverb

[TahlilGaran] Dictionary of Contemporary English ▲