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as in poisonous
bad for the well-being of the body mixing bleach and ammonia can cause noxious fumes that can seriously harm you

Synonyms & Similar Words

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How is the word noxious different from other adjectives like it?

Some common synonyms of noxious are baneful, deleterious, detrimental, and pernicious. While all these words mean "exceedingly harmful," noxious applies to what is both offensive and injurious to the health of a body or mind.

noxious chemical fumes

When is it sensible to use baneful instead of noxious?

The words baneful and noxious can be used in similar contexts, but baneful implies injury through poisoning or destroying.

the baneful notion that discipline destroys creativity

When would deleterious be a good substitute for noxious?

In some situations, the words deleterious and noxious are roughly equivalent. However, deleterious applies to what has an often unsuspected harmful effect.

a diet found to have deleterious effects

When could detrimental be used to replace noxious?

While the synonyms detrimental and noxious are close in meaning, detrimental implies obvious harmfulness to something specified.

the detrimental effects of excessive drinking

When might pernicious be a better fit than noxious?

The meanings of pernicious and noxious largely overlap; however, pernicious implies irreparable harm done through evil or insidious corrupting or undermining.

the claim that pornography has a pernicious effect on society

Examples Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of noxious In addition to preventing material damage, Wildfire Shield prevents the ill effects of noxious smoke. Alison Van Houten, TIME, 30 Oct. 2024 Meanwhile, noxious chemicals from the eruptions or even an uptick in ultraviolet radiation from ozone-destroying chemicals injected into the stratosphere could all have played a role. Bypaul Voosen, science.org, 12 Sep. 2024 Little was known of the noxious nature of the fish until this research came out. Scott Travers, Forbes, 24 Oct. 2024 The suit claims the lagoon is the source of a noxious fumes and odors and resulted in economic loss to Spinas, according to a news release issued by the attorneys. Randal Seyler, arkansasonline.com, 21 Oct. 2024 See all Example Sentences for noxious 
Recent Examples of Synonyms for noxious
Adjective
  • But left unchecked, fear of failure becomes poisonous.
    Mark Kane, Forbes, 9 Dec. 2024
  • But the film’s poisonous reviews and disastrous box office all but torpedoed her Oscar hopes this year, and the film was shut out in Monday’s Globe nominations.
    Patrick Ryan, USA TODAY, 9 Dec. 2024
Adjective
  • Another growing problem is the use of harmful flame retardants in the plastic enclosures around batteries.
    Arlene Blum, Forbes, 8 Dec. 2024
  • Additionally, the brand touts the product as being free from harmful chemicals, dyes, and synthetic fragrances, which earned it some extra brownie points.
    Casey Clark, Better Homes & Gardens, 6 Dec. 2024
Adjective
  • That ends up dislodging the disgusting foreign item in Larry's throat.
    Esther Zuckerman, TIME, 12 Dec. 2024
  • Leigh goes for the gags in this one, from Broadbent’s workplace pratfall to friend of the family Aubrey’s (Timothy Spall) disgusting new restaurant.
    Fran Hoepfner, Vulture, 9 Dec. 2024
Adjective
  • Russia has consistently denied using chemical weapons in Ukraine and, in turn, has accused Kyiv of employing toxic agents on the battlefield.
    Michael D. Carroll, Newsweek, 18 Dec. 2024
  • Most of the concern comes from lab studies involving animals or human cell lines — scientists observed toxic effects of microplastics on the cellular and molecular levels.
    Will Stone, NPR, 18 Dec. 2024
Adjective
  • Road conditions could also be dangerous in the region.
    Tanya Wildt, Detroit Free Press, 13 Dec. 2024
  • Being inconsistent with genocide allegations sets a dangerous precedent.
    Thomas G. Moukawsher, Newsweek, 12 Dec. 2024
Adjective
  • For many people, finding the perfect ugly Christmas sweater is an annual tradition.
    Shea Simmons, People.com, 12 Dec. 2024
  • In a Hungarian cartoon from around 1951, Churchill is seen as an ugly villain, ready to set households and factories on fire.
    Ella Feldman, Smithsonian Magazine, 12 Dec. 2024
Adjective
  • However, communities in the San Gabriel and San Bernardino mountains were still experiencing unhealthful air quality, according to the air district.
    Tony Briscoe, Los Angeles Times, 14 Sep. 2024
  • According to the agency’s map, very unhealthy air levels were detected in the Chino Valley and San Bernardino areas, unhealthful levels in the eastern San Gabriel Valley as well as Pomona, Perris, Corona, Riverside areas and far northern Orange County.
    Hannah Fry, Los Angeles Times, 9 Sep. 2024
Adjective
  • Blocking the deal on spurious national security grounds would invite many far more realistic, adverse national security and economic consequences.
    Dan Ikenson, Forbes, 13 Dec. 2024
  • Several others have been banned over the years due to adverse health effects and other issues.
    Stephan Pechdimaldji, Newsweek, 13 Dec. 2024

Thesaurus Entries Near noxious

Cite this Entry

“Noxious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/noxious. Accessed 21 Dec. 2024.

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