cold-blooded

/'kould'blʌdid/
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Thân thiện
cold-blooded

A lizard, being cold-blooded, basks on a warm rock in the sun.

Definition
  1. Adjective:
    • Having a body temperature that varies with the environment: Describes animals, such as reptiles and fish, whose internal body temperature is not regulated internally but changes with the surrounding temperature.
    • Lacking emotion or pity; callous: Describes actions or behavior that show a deliberate and merciless lack of feeling, compassion, or remorse.
    • Done in a deliberately ruthless and unemotional manner: Often used to describe violent acts committed without passion or sudden impulse, but with calm premeditation.
Usage Examples

  • Describing animals:

    • Snakes and lizards are cold-blooded creatures.
    • The biologist studied the metabolism of cold-blooded fish.

  • Describing behavior or character:

    • The dictator was known for his cold-blooded decisions.
    • It was a cold-blooded betrayal of their trust.

  • Describing actions:

    • The murder was a cold-blooded execution.
    • He spoke about the incident in a cold-blooded, factual way.
Advanced Usage
  • "in cold blood": This adverbial phrase means to do something, especially a violent act, in a deliberate, premeditated, and unemotional way.
    • The victim was shot in cold blood.
  • The term can be used figuratively in non-violent contexts to describe a severe lack of emotional warmth.
    • Her cold-blooded analysis of the layoffs shocked the staff.
Variants and Related Words
  • Cold-bloodedly (adverb): In a cold-blooded manner.
    • He cold-bloodedly calculated the risks.
  • Cold-bloodedness (noun): The quality or state of being cold-blooded.
    • The cold-bloodedness of the crime horrified the community.
Synonyms
  • For animals: Ectothermic, poikilothermic.
  • For behavior: Callous, heartless, merciless, ruthless, unfeeling, inhuman, pitiless, calculating.
Antonyms
  • For animals: Warm-blooded, endothermic.
  • For behavior: Compassionate, merciful, kind-hearted, emotional, passionate.
Related Idioms and Phrases
  • In cold blood: As mentioned in 'Advanced Usage', this is the primary idiom directly related to the word.
    • The historical account described how the prisoners were killed in cold blood.
cold-blooded

A lizard, being cold-blooded, basks on a warm rock in the sun.

Adjective
  1. having cold blood (in animals whose body temperature is not internally regulated)
  2. without compunction or human feeling
    • in cold blood
    • cold-blooded killing
    • insensate destruction

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