as in spreading
exciting a similar feeling or reaction in others
an infectious giggle that got the whole class laughing
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Recent Examples of infectious
For a child who is not vaccinated against measles — one of the world’s most infectious viruses — no classroom, school bus or grocery store is safe.
—
Emily Baumgaertner Nunn, New York Times, 4 Apr. 2025
Then there’s Jamie Lee Curtis, whose spirit permeates and is infectious in a great way.
—Chris Gardner, HollywoodReporter, 3 Apr. 2025
Affair warning: The Delray Affair will unspool over seven city blocks along Atlantic Avenue in downtown Delray Beach this weekend, with hundreds of artists and makers displaying work, plus live music, the popular Beer & Wine Garden on Old School Square and an infectious joie de vivre.
—Ben Crandell, Sun Sentinel, 3 Apr. 2025
Chaos would not be a good way to combat infectious pathogens.
—Bruce Y. Lee, Forbes.com, 30 Mar. 2025
See All Example Sentences for infectious
Emily Baumgaertner Nunn, New York Times, 4 Apr. 2025
Then there’s Jamie Lee Curtis, whose spirit permeates and is infectious in a great way.
—Chris Gardner, HollywoodReporter, 3 Apr. 2025
Affair warning: The Delray Affair will unspool over seven city blocks along Atlantic Avenue in downtown Delray Beach this weekend, with hundreds of artists and makers displaying work, plus live music, the popular Beer & Wine Garden on Old School Square and an infectious joie de vivre.
—Ben Crandell, Sun Sentinel, 3 Apr. 2025
Chaos would not be a good way to combat infectious pathogens.
—Bruce Y. Lee, Forbes.com, 30 Mar. 2025
See All Example Sentences for infectious
Cite this Entry
“Infectious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infectious. Accessed 16 Apr. 2025.
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