as in spreading
exciting a similar feeling or reaction in others
an infectious giggle that got the whole class laughing
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Example Sentences
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Recent Examples of infectious
The infectious energy and Justin Bieber-style appeal of 25-year-old country hitmaker Bailey Zimmerman was not reflected in the CMA nominations.
—
Marcus K. Dowling, USA Today, 11 Sep. 2025
Most sneezes are triggered by contact with infectious agents or after inhaling irritants, but the cause of photic sneezing is not fully understood.
—Scott Lafee, San Diego Union-Tribune, 9 Sep. 2025
While Garraty is our main protagonist, Johnsson as McVries nearly steals the entire spotlight with his big doe eyes, infectious smile and genuine delivery of belief that there's beauty in everything, and that people, and the world, can change.
—Meredith G. White, AZCentral.com, 8 Sep. 2025
Bryce Young calls Canales’ positivity infectious.
—Alex Zietlow, Charlotte Observer, 4 Sep. 2025
See All Example Sentences for infectious
Marcus K. Dowling, USA Today, 11 Sep. 2025
Most sneezes are triggered by contact with infectious agents or after inhaling irritants, but the cause of photic sneezing is not fully understood.
—Scott Lafee, San Diego Union-Tribune, 9 Sep. 2025
While Garraty is our main protagonist, Johnsson as McVries nearly steals the entire spotlight with his big doe eyes, infectious smile and genuine delivery of belief that there's beauty in everything, and that people, and the world, can change.
—Meredith G. White, AZCentral.com, 8 Sep. 2025
Bryce Young calls Canales’ positivity infectious.
—Alex Zietlow, Charlotte Observer, 4 Sep. 2025
See All Example Sentences for infectious
Recent Examples of Synonyms for infectious
catching
Adjective
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Kirk, logging more catching time than ever before, is perhaps the exception.—
Mitch Bannon,
New York Times,
18 Aug. 2025
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However, Boone was incredibly complimentary of Rice’s catching skills on Monday and Tuesday.—
Gary Phillips,
New York Daily News,
12 Aug. 2025
Cite this Entry
“Infectious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infectious. Accessed 20 Sep. 2025.
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