Synonyms of cold-blooded

cold-blooded

adjective

ˈkōl(d)-ˈblə-dəd 

1

as in ruthless

having or showing a lack of sympathy or tender feelings

a cold-blooded criminal who never once showed an ounce of mercy to his victims

Synonyms & Similar Words

• ruthless
• merciless
• stony
• callous
• pitiless
• heartless
• remorseless
• brutal
• hard
• cruel
• compassionless
• oppressive
• vicious
• inhuman
• unfeeling
• soulless
• malicious
• abusive
• inhumane
• hateful
• insensitive
• harsh
• unmerciful
• hard-hearted
• take-no-prisoners
• tough
• unsympathetic
• stern
• obdurate
• grim
• uncharitable
• insensate
• affectless
• hard-boiled
• thick-skinned
• unsparing
• slash-and-burn
• indurate
• pachydermatous
• savage
• desensitized
• case-hardened
• severe
• ironhearted
• thoughtless
• uncaring
• mean
• boorish
• unthinking
• stonyhearted
• unfriendly
• inconsiderate
• rough
• malevolent
• heedless
• spiteful
• virulent
• cold
• unloving
• ungentle
• rough-and-tumble
• disagreeable
• brutish
• bestial
• surly
• barbarous
• hard-bitten
• ironfisted
• jackbooted
• heavy-handed
• acrimonious
• ironhanded
• ill-natured
• evil-minded
• rancorous
• ill-tempered
• sledgehammer
• frosty
• knock-down, drag-out
• austere

Antonyms & Near Antonyms

• sympathetic
• warm
• sensitive
• charitable
• compassionate
• humane
• merciful
• benevolent
• gentle
• kind
• kindly
• mild
• tender
• softhearted
• kindhearted
• friendly
• lenient
• warmhearted
• indulgent
• tenderhearted
• gracious
• cordial
• benignant
• tolerant
• affectionate
• loving
• good-natured
• understanding
• good-tempered
• fond
• clement

2

as in icy

lacking in friendliness or warmth of feeling

the cold-blooded selfishness shown by the miser when confronted by people in need

Synonyms & Similar Words

• icy
• cold
• frigid
• chilly
• cool
• arctic
• chill
• brittle
• reserved
• frozen
• glacial
• clammy
• detached
• unfriendly
• unsympathetic
• cold-eyed
• frosty
• antiseptic
• wintry
• pitiless
• hard-eyed
• heartless
• gelid
• uncaring
• coldhearted
• coldish
• uncordial
• unemotional
• unfeeling
• bloodless
• soulless
• dispassionate
• hard-hearted
• unresponsive
• undemonstrative
• aloof
• uninterested
• indifferent
• apathetic
• impersonal
• antisocial
• standoffish
• unenthusiastic
• kindless
• unsociable
• unsocial
• offish

Antonyms & Near Antonyms

• warm
• sympathetic
• friendly
• happy
• genial
• cordial
• compassionate
• hearty
• kind
• warm-blooded
• emotional
• warmhearted
• expressive
• demonstrative
• enthusiastic
• kindhearted
• eager
• passionate

3

as in stoic

not feeling or showing emotion

a cold-blooded assessment of the situation showed that the company needed either to lay off workers or go bankrupt

Synonyms & Similar Words

• stoic
• phlegmatic
• unemotional
• calm
• emotionless
• enigmatic
• passionless
• impassive
• stolid
• numb
• apathetic
• bland
• detached
• undemonstrative
• affectless
• impassible
• dispassionate
• cold
• collected
• composed
• dry
• reserved
• empty
• cool
• unflappable
• imperturbable
• unmoved
• taciturn
• pitiless
• wooden
• aloof
• expressionless
• deadpan
• inscrutable
• objective
• blank
• unsentimental
• bloodless
• vacant
• impersonal
• inexpressive
• indifferent
• thoughtless
• unconcerned
• reticent
• unfeeling
• unresponsive
• stone-faced
• inconsiderate
• straight-faced
• impenetrable
• hard-hearted
• insensible

Antonyms & Near Antonyms

• emotional
• passionate
• impassioned
• fervent
• demonstrative
• vehement
• enthusiastic
• fervid
• passional
• fiery
• zealous
• burning
• ardent
• red-hot
• sentimental
• hot-blooded
• flaming
• dramatic
• blazing
• sympathetic
• glowing
• warm-blooded
• melodramatic
• mushy
• mawkish
• compassionate
• responsive
• histrionic
• reactive
• sensitive
• gung ho
• maudlin
• perfervid
• gushing
• overheated
• overemotional

4

as in hybrid

or coldblood being offspring produced by parents of different races, breeds, species, or genera

he may not be as fancy as the other horses they own, but that cold-blooded gelding is safe and gentle

Synonyms & Similar Words

• hybrid
• mixed
• crossbred
• cross
• mongrel
• hybridized
• grade
• half-bred
• crossed
• trihybrid
• dihybrid
• outcrossed
• interbred

Antonyms & Near Antonyms

• blooded
• thoroughbred
• purebred
• full-blood
• full-blooded
• inbred
• pedigreed
• straightbred
• linebred

Example Sentences

Recent Examples of cold-blooded

From a long-quiet wingman who dispensed with six years of muttering under his breath and spoke with a cold-blooded certainty that announced his arrival as a force to be reckoned with. — Jon Krawczynski, New York Times, 1 May 2026

The research suggests that warm-blooded fish species, which include great whites, shortfin makos and salmon sharks, burn about four times more energy than cold-blooded species and will increasingly be forced into cooler regions with less food. — Moná Thomas, PEOPLE, 24 Apr. 2026

Some of the ocean’s most powerful predators are warm-blooded creatures that burn nearly four times more energy than their cold-blooded counterparts. — Maria Mocerino, Interesting Engineering, 19 Apr. 2026

Crowds returned to the Cal Expo Pavilion on Sunday to get an up close look at thousands of cold-blooded creatures at the 28th annual Sacramento Reptile Show. — Nicole Buss, Sacbee.com, 19 Apr. 2026