Bug
Bug noun - An abnormal state that disrupts a plant's or animal's normal bodily functioning.
Usage example: I can't go to work today because I've caught some bug that's going around
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
Bug is a synonym for illness in disease topic. You can use "Bug" instead a noun "Illness", if it concerns topics such as sickness. informal substitute
Nearby Word: ill
Mutual synonyms
How words are described
Both words in one sentence
- World of Symbolism: One theory (among many, many, many) is that turning into a bug represents mental disease — Gregor can't care for his family anymore because of his illness, no one understands him, and his family must look after him because he is rejected by society.
Source: Literature / The Metamorphosis -
He later blames illness brought on by bad baloney as the Y2K bug as well.
Cite this Source
Illness and Bug. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/bug/illness
Bug & Illness. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/bug/illness>.
Illness or Bug. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/bug/illness.
Google Ngram Viewer shows how "bug" and "illness" have occurred on timeline