lethal

/'li:θəl/
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lethal

A scientist carefully labels a vial containing a lethal substance in the laboratory.

Definition
  1. Adjective:
    • Capable of causing death; deadly or fatal: Describes something with the potential or power to kill.
    • Extremely harmful or destructive: Can describe something that causes great damage or is devastatingly effective.
Usage

The adjective "lethal" is used to qualify nouns, indicating they have death-dealing properties or extreme danger. It is often used in medical, military, legal, and general contexts. - It typically precedes the noun it modifies (e.g., a lethal dose). - It can be used in both literal (causing physical death) and figurative (causing the end or failure of something) senses, though the literal sense is primary.

Examples
  • The snake's venom is highly lethal.
  • He was convicted of carrying a lethal weapon.
  • The boxer delivered a lethal blow to his opponent's head.
  • The policy had a lethal effect on small businesses.
  • A lethal dose of the drug was found in his system.
Advanced Usage
  • "Lethal injection": A method of execution where a person is killed with a fatal dose of drugs.
    • The prisoner was executed by lethal injection.
  • Figurative Use: Describing something that causes the certain end or failure of a non-living entity.
    • The scandal proved to be a lethal blow to his political career.
Variants and Related Words
  • Lethality (noun): The capacity or power to cause death; the quality of being lethal.
    • The lethality of the new virus strain is being studied.
  • Non-lethal (adjective): Not capable of causing death.
    • The police used non-lethal force to disperse the crowd.
Synonyms
  • Deadly: (Very similar, often interchangeable) Likely to cause or capable of causing death.
  • Fatal: Resulting in or capable of causing death.
  • Mortal: Causing or liable to cause death; fatal. (Often used in "mortal wound").
  • Deathly: Resembling or suggestive of death.
Antonyms
  • Harmless: Not able or likely to cause harm.
  • Safe: Not causing or likely to cause harm or injury.
  • Non-lethal: (see above).
Phrases and Collocations
  • Lethal weapon: A weapon capable of causing death.
  • Lethal dose: The amount of a substance sufficient to cause death.
  • Lethal force: The use of force that is likely to cause death or grievous bodily harm.
  • Potentially lethal: Having the possibility of causing death.
lethal

A scientist carefully labels a vial containing a lethal substance in the laboratory.

Adjective
  1. of an instrument of certain death
    • deadly poisons
    • lethal weapon
    • a lethal injection