Flu
Sickness
Sickness noun - The condition of not being in good health.
Mutual synonyms
Both words in one sentence
- In "Bowser Junior's Sickness", due to his flu, Junior's voice cracks the whole time.
Source: Inopportune Voice Cracking -
Mistaken for Pregnant: In "Sick", Barbie initially worries that Skipper has Morning Sickness, but it turns out she just has the flu.
Source: Creator / Sam & Mickey - Body Horror: The Sickness, which starts out with flu-like symptoms, then goes into horrific glowing orange boils and growths.
Cite this Source
Sickness and Flu. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/flu/sickness
Flu & Sickness. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/flu/sickness>.
Sickness or Flu. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/flu/sickness.
Google Ngram Viewer shows how "flu" and "sickness" have occurred on timeline