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
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
This year has also seen the largest measles outbreak since the highly infectious virus was declared eliminated from the country in 2000.
—Jon Brodkin, ArsTechnica, 3 Sep. 2025
The energy throughout the tournament was palpable, coursing with the infectious fun of NYC's legendary playground basketball scene.
—Devin Robertson, MSNBC Newsweek, 27 Aug. 2025
See All Example Sentences for infectious
Meredith G. White, AZCentral.com, 8 Sep. 2025
Bryce Young calls Canales’ positivity infectious.
—Alex Zietlow, Charlotte Observer, 4 Sep. 2025
This year has also seen the largest measles outbreak since the highly infectious virus was declared eliminated from the country in 2000.
—Jon Brodkin, ArsTechnica, 3 Sep. 2025
The energy throughout the tournament was palpable, coursing with the infectious fun of NYC's legendary playground basketball scene.
—Devin Robertson, MSNBC Newsweek, 27 Aug. 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 13 Sep. 2025.
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