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From Latin nauseōsus (causing nausea), corresponding synchronically to nausea +‎ -ous.


  • (UK) IPA(key): /ˈnɔːziːəs/, /ˈnɔːsiːəs/
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  • (US) IPA(key): /ˈnɔːʃəs/, /ˈnɔːʒəs/
  • (cotcaught merger, Canada) IPA(key): /ˈnɑːʃəs/, /ˈnɑːʒəs/


nauseous (comparative more nauseous, superlative most nauseous)

  1. Causing nausea; sickening or disgusting. [from 17th c.]
    • 1786 June 27, Hester Thrale Piozzi, Thraliana:
      [T]he Italians grossness of Conversation is still very offensive & nauseous, tho' long accustomed to it.
    • 1819, Lord Byron, Don Juan, section I:
      And then what proper person can be partial / To all those nauseous epigrams of Martial?
  2. (obsolete) Inclined to nausea; sickly, squeamish. [17th c.]
  3. (proscribed) Afflicted with nausea; sick. [from 19th c.]
    • 1848, Samuel Hahnemann, The Chronic Diseases, Their Specific Nature and Their Homeopathic Treatment: Antipsoric Remedies, Volume 2:
      After he had scarcely eaten enough, he felt nauseous; but nausea ceased as soon as he stopped eating entirely, …
    • 1878, The North American Journal of Homeopathy, Volume 27:
      [] during stretching the patient felt nauseous
    • 2010 September 4, Tom Smith, The Guardian:
      Is it a myth that you shouldn't drink alcohol while taking antibiotics? I often do and haven't felt remotely nauseous.

Usage notes[edit]

Some state that nauseous should be used as synonymous with nauseating. AHD4 notes that that in common usage, nauseous is synonymous with nauseated.



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See also[edit]