Antonyms of adj pitiless

2 senses of pitiless

Sense 1
pitiless, remorseless, ruthless, unpitying -- (without mercy or pity; "an act of ruthless ferocity"; "a monster of remorseless cruelty")

INDIRECT (VIA merciless) -> merciful -- (showing or giving mercy; "sought merciful treatment for the captives"; "a merciful god")

Sense 2
pitiless, unkind -- (deficient in humane and kindly feelings)

INDIRECT (VIA inhumane) -> humane -- (marked or motivated by concern with the alleviation of suffering)

Similarity of adj pitiless

2 senses of pitiless

Sense 1
pitiless, remorseless, ruthless, unpitying -- (without mercy or pity; "an act of ruthless ferocity"; "a monster of remorseless cruelty")
       => merciless (vs. merciful), unmerciful -- (having or showing no mercy; "the merciless enemy"; "a merciless critic"; "gave him a merciless beating")

Sense 2
pitiless, unkind -- (deficient in humane and kindly feelings)
       => inhumane (vs. humane) -- (lacking and reflecting lack of pity or compassion; "humans are innately inhumane; this explains much of the misery and suffering in the world"; "biological weapons are considered too inhumane to be used")