Word
sickness
Phoneticssick·ness, stress on the first syllable
US/ˈsɪknəs/
UK/sˈɪknəs/
Definitions
01being ill
A2 · Elementary Uncountable noun
n. the state of being unwell or having a disease.
n. the general state of being ill or diseased; often used to describe a period of time spent away from work or duties.
“She had to stay home from school because of sickness.”
“The company policy allows for ten days of paid leave due to sickness before a formal medical certificate is required.”
Pitfall
He has a sickness in his lungs.
He has a disease in his lungs.
Use 'sickness' for the general state of being unwell; use 'disease' or 'illness' for specific medical conditions affecting an organ.
02a specific disease
B1 · Intermediate Countable noun Medicine
n. a particular type of illness or disease.
n. a specific disease or malady, often named by its cause or symptoms.
“Sleeping sickness is a serious problem in some parts of the world.”
“Researchers are investigating whether this particular sickness is transmitted through contaminated water or airborne particles.”
Synonyms
03nausea
B1 · Intermediate Uncountable noun
n. the feeling that you are going to vomit.
n. a sensation of nausea or stomach distress, often caused by motion or pregnancy.
“I always get motion sickness when I try to read in a moving car.”
“Morning sickness is a common experience during the first trimester of pregnancy, though its severity varies greatly between individuals.”
Synonyms
04grammar error
C2 · Proficiency Uncountable noun Medicine Technical
n. a mistake where a speaker uses a rare grammar form instead of a common one.
n. the analogical misuse of a rarer or marked grammatical case in place of a more common or unmarked case.
“The linguist studied the case sickness in the child's speech patterns.”
“The paper argues that the observed sickness in the dative case is actually a predictable result of morphological simplification in dying languages.”
Usage
In linguistics, this term is often qualified by the specific case being misused, such as 'dative sickness'.
Etymology
From Middle English sikness, from Old English sēocnes. By surface analysis, sick + -ness.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.
Word family
NOUN
ADJECTIVE
Domain
- Exam level
- CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.A2 KeyIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.3.0–4.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 2.0–2.524–43TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.225–549
- Frequency
- Frequent
- Level
- A2 · Elementary
- Updated
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englishreference.com/q/sickness