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
Monfils, a 13-time winner on the ATP Tour, sealed his victory on a booming ace – his 24th of the match – and proceeded to celebrate with a shimmy and a dance on-court, his moves and infectious smile drawing huge cheers from the crowd.
—
Matias Grez, CNN, 18 Jan. 2025
And existing immunity could, for a time, still buffer against an infectious deluge, especially from pathogens that remain quite rare globally.
—Katherine J. Wu, The Atlantic, 28 Jan. 2025
This leaves the people who drink it vulnerable to infectious microbes or potentially other toxic contaminants.
—Bill Sullivan, The Conversation, 27 Jan. 2025
Another study from the same team found that people living near the most dense clusters of poultry farms in that area were more likely to suffer infectious diarrhea and campylobacter infection, a disease associated with bloody diarrhea and stomach cramps, than those living further away.
—Gavin Off, Charlotte Observer, 26 Jan. 2025
See all Example Sentences for infectious 
Matias Grez, CNN, 18 Jan. 2025
And existing immunity could, for a time, still buffer against an infectious deluge, especially from pathogens that remain quite rare globally.
—Katherine J. Wu, The Atlantic, 28 Jan. 2025
This leaves the people who drink it vulnerable to infectious microbes or potentially other toxic contaminants.
—Bill Sullivan, The Conversation, 27 Jan. 2025
Another study from the same team found that people living near the most dense clusters of poultry farms in that area were more likely to suffer infectious diarrhea and campylobacter infection, a disease associated with bloody diarrhea and stomach cramps, than those living further away.
—Gavin Off, Charlotte Observer, 26 Jan. 2025
See all Example Sentences for infectious
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Cite this Entry
“Infectious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infectious. Accessed 21 Feb. 2025.
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