1
: very cruel : having or showing no pity
a pitiless [=merciless] ruler/critic
The soldiers were pitiless toward their enemy.
2
: very harsh or severe
the pitiless desert heat
a pitiless storm
Cite this Entry
“Pitiless.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/pitiless. Accessed 17 Apr. 2026.
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