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Synonyms

illness

American  
[il-nis] / ˈɪl nɪs /

noun

  1. poor health; sickness.

    He grew up in an environment known for poverty, illness, and little opportunity for education.

  2. a specific sickness or disease, or an instance of such.

    Please be as accurate as possible in listing your childhood illnesses.

    Synonyms:
    infirmity, affliction, ailment
  3. Obsolete. wickedness.


illness British  
/ ˈɪlnɪs /

noun

  1. a disease or indisposition; sickness

  2. a state of ill health

  3. obsolete wickedness

"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

Usage

What does illness mean? Illness is a state of poor health or sickness, as in I’ve had to miss a lot of work due to illness.The word illness is also commonly used to refer to a disease or instance of sickness.This sense of the word is often used when the type of disease is uncertain or unknown or when someone doesn’t want to specify what it is, as in They said that he is in the hospital with an illness, but they didn’t provide any further details. The word illness is based on the adjective ill, meaning sick.Example: The best way to avoid illness is to thoroughly wash your hands.

Etymology

Origin of illness

First recorded in 1490–1500; ill + -ness

Compare meaning

How does illness compare to similar and commonly confused words? Explore the most common comparisons:

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It is his new normal, along with the daily blackouts, the failing healthcare system, the trash piled high along the streets, and his aching joints from the mosquito-borne illnesses that have plagued the island.

From The Wall Street Journal

And while medical advances boost longevity, they also increase the odds of living with chronic pain and progressive illnesses.

From MarketWatch

"And some don't declare illnesses they have for fear of having their licence taken away".

From BBC

International rugby players Rob Burrow and Doddie Weir raised awareness of the terminal neurological illness before they died, as did Irish journalist and broadcaster Charlie Bird.

From BBC

He had surgery in January 2013 - which he says allowed him to return to a "normal life" - but at the height of his illness, he was barely able to leave his own home.

From BBC