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View synonyms for

toxic

[tok-sik]

adjective

  1. of, pertaining to, affected with, or caused by a toxin or poison.

    a toxic condition.

  2. acting as or having the effect of a poison; poisonous.

    a toxic drug.

  3. causing unpleasant feelings; harmful or malicious: toxic criticism.

    a toxic boyfriend who wanted complete control over her;

    toxic criticism.

  4. Finance.

    1. pertaining to or noting debt that will probably not be repaid.

      toxic mortgages.

    2. pertaining to or noting a financial instrument or other asset that has no value or an unknown value because there is no market for it.

      toxic mortgage-backed securities.



noun

  1. a toxic chemical or other substance.

toxic

/ ˈɒɪ /

adjective

  1. of, relating to, or caused by a toxin or poison; poisonous

  2. harmful or deadly

  3. (of a financial asset) likely to cause significant loss to the holder

“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

toxic

  1. Relating to or caused by a toxin.

  2. Capable of causing injury or death, especially by chemical means; poisonous.

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Other Word Forms

  • toxically adverb
  • hypertoxic adjective
  • nontoxic adjective
  • nontoxically adverb
  • posttoxic adjective
  • untoxic adjective
  • untoxically adverb
  • ˈٴdz澱 adverb
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Word History and Origins

Origin of toxic1

First recorded in 1655–65; from Late Latin toxicus “poisonous,” derivative of toxicum “poison,” from Greek ٴdz澱ó (for toxikòn phármakon literally, “bow poison,” i.e., poison used on arrows), equivalent to ó(Dz) “bow” + -ikon, neuter of -ikos adjective suffix; -ic
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Word History and Origins

Origin of toxic1

C17: from medical Latin toxicus, from Latin toxicum poison, from Greek toxikon ( pharmakon ) (poison) used on arrows, from toxon arrow
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Example Sentences

Examples have not been reviewed.

A "Trojan horse" therapy that sneaks toxic drugs inside cancer cells is being made available on the NHS in England in a world first.

From

“The Wild Robot Escapes” finds Roz navigating the dangers of urban life and humans with guns, while a toxic tide in “The Wild Robot Protects” leaves the animals scrambling for ever more scarce resources.

From

After years of showing toxic male behavior onscreen, this TV season has seen plenty of badly behaved men — well, at least the fictional ones — receive retribution.

From

They launched tear gas canisters and smoke grenades into the street, leaving a toxic cloud in the air.

From

Successive governments have failed to deal with the threat posed by spreading sewage sludge containing toxic chemicals on farmers' fields, a former chair of the Environment Agency has told the BBC.

From

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toxemictoxicant