Infectious
Infectious adjective - Exciting a similar feeling or reaction in others.
Sick and infectious are semantically related. In some cases you can use "Sick" instead an adjective "Infectious".
Sick
Sick adjective - Temporarily suffering from a disorder of the body.
Infectious and sick are semantically related. Sometimes you can use "Infectious" instead an adjective "Sick".
Mutual synonyms
Both words in one sentence
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Actually, because she had been so sick and so infectious, in a way they had already lost her three years earlier.
Source: Film / The Twilight Samurai -
A Monster of the Week on Charmed is Doctor Williamson, and infectious disease specialist who had treated Piper when she was sick a few episodes earlier.
Source: Deadly Doctor - Players who pick up the remote anyway are treated to getting sucker-punched with an attack that deals Physical damage and inflicts the infectious, strength-reducing Sick status, while choosing not to fall for the trap results in Kenji getting frustrated at your savviness, reducing his Defense.
Source: Victory Fakeout
Cite this Source
Sick and Infectious. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/infectious/sick
Infectious & Sick. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/infectious/sick>.
Sick or Infectious. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/infectious/sick.
Google Ngram Viewer shows how "infectious" and "sick" have occurred on timeline