say it: PIT-ee-luhs
pitiless is an adjective meaning "without mercy or pity". It carries 2 recorded senses.
without mercy or pity
“an act of ruthless ferocity”
“a monster of remorseless cruelty”
deficient in humane and kindly feelings
Definitions, synonyms and semantic relations for pitiless come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.