Disease
Disease noun - An abnormal state that disrupts a plant's or animal's normal bodily functioning.
Usage example: they caught a rare disease while they were traveling in Africa and were sick for weeks
Illness is a synonym for disease in ailment topic. In some cases you can use "Illness" instead a noun "Disease", when it comes to topics like health, disorder, sickness, symptom. popular alternative
Nearby Word: diseased
Illness
Illness noun - An abnormal state that disrupts a plant's or animal's normal bodily functioning.
Usage example: suffered from a mysterious illness that left her weak and tired all the time
Disease is a synonym for illness in sickness topic. You can use "Disease" instead a noun "Illness", if it concerns topics such as ailment, health, disorder, symptom. popular alternative
Nearby Word: ill
Mutual synonyms
Related pairs
- affection and disease
- affection and illness
- malady and disease
- malady and illness
- disorder and disease
- disorder and illness
- ailment and disease
- ailment and illness
- complaint and disease
- complaint and illness
- indisposition and disease
- indisposition and illness
- sickness and disease
- sickness and illness
How words are described
| old | old disease | old illness |
| rare | rare disease | rare illness |
| similar | similar disease | similar illness |
| painful | painful disease | painful illness |
| Other adjectives: nasty, actual, real, severe, serious, terrible, horrible, mental, deadly, fatal, mysterious, incurable, unknown, strange, chronic, unspecified, contagious, magical, wasting, debilitating, life-threatening, genetic, unnamed, degenerative. | ||
Both words in one sentence
- Vanellope's glitching is treated like some sort of disease or illness, similar to epilepsy or Parkinson's Disease by the other racers.
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If a character's hair turns white due to a disease or illness, it's Disease Bleach.
Source: Mystical White Hair - Alternately, their death may be assured by getting lost at sea, locked in an airtight coffin, seriously injured or catching/developing an incredibly deadly illness or disease.
Source: Doomed Protagonist
Cite this Source
Illness and Disease. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/disease/illness
Disease & Illness. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/disease/illness>.
Illness or Disease. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/disease/illness.
Google Ngram Viewer shows how "disease" and "illness" have occurred on timeline