Word Type

Adjective

Adjective

The word "merciless" can be used as adjective and adjective.

Word Relationships

Opposites (Antonyms)

merciful merciful

Derived Terms

mercilessly mercilessness unmerciless

Derived From

less mercy

Related Terms

bloody cruel hard implacable inclement mercy pitiless uncompassionate unkind

Similar Terms

bloody bowelless bowelless cutthroat fierce hard implacable inclement mortal mortal pitiless remorseless remorseless ruthless tigerish tigerish uncompassionate unkind unpitying

Synonym Network

cruel pitiless ruthless unmerciful

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.