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Synonyms for merciless
adj mean, heartless- barbarous
- callous
- cruel
- fierce
- grim
- harsh
- implacable
- inexorable
- inhumane
- relentless
- ruthless
- severe
- unforgiving
- unrelenting
- unsparing
- unyielding
- unmerciful
- compassionless
- cutthroat
- dog-eat-dog
- gratuitous
- hard
- hardhearted
- hatchet job
- having a killer instinct
- iron-fisted
- mean machine
- mortal
- pitiless
- unappeasable
- uncalled-for
- unfeeling
- unflinching
- unpitying
- unsympathetic
- wanton
Antonyms for merciless
- bright
- calm
- compassionate
- considerate
- easy
- feeling
- flexible
- gentle
- kind
- merciful
- mild
- nice
- peaceful
- polite
- remorseful
- sympathetic
- tender
- yielding
- giving
- sparing
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the
Philip Lief Group.
bitter
adjective. painful, distressing
cold-blooded
adjective. cruel, heartless
compassionless
adjective. unsympathetic
cruel
adjective. vicious, pitiless; causing pain
- atrocious
- barbarous
- bestial
- bitter
- bloodthirsty
- brutal
- brutish
- callous
- cold-blooded
- degenerate
- demoniac
- depraved
- evil
- excruciating
- ferocious
- fierce
- flinty
- hard
- hard-hearted
- harsh
- hateful
- heartless
- hellish
- implacable
- inexorable
- inhuman
- inhumane
- malevolent
- merciless
- monstrous
- painful
- pernicious
- poignant
- rancorous
- relentless
- revengeful
- ruthless
- sadistic
- sinful
- spiteful
- tyrannical
- unfeeling
- unkind
- unnatural
- unrelenting
- vengeful
- vicious
- virulent
- wicked
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the
Philip Lief Group.