as in spreading
exciting a similar feeling or reaction in others
an infectious giggle that got the whole class laughing
Synonyms & Similar Words
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Recent Examples of infectious
The limited spread among healthcare workers in the Epuyen outbreak speaks to the short window of time that a person may be infectious, experts said.
—
Brenda Goodman, CNN Money, 6 May 2026
Larsson turned into something of a supernova for virality, whether for her vocal anti-Trump politics, her glittery Y2K style, or her infectious tour choreography.
—Craig Jenkins, Vulture, 4 May 2026
Having Certain Health Conditions Several health conditions, including hormonal, nervous, infectious, and immune system disorders, can cause a dry mouth.
—Colleen Doherty, Verywell Health, 2 May 2026
The guidance advised public health agencies to document and report details of each case of measles, including close contacts and locations visited while a person was infectious.
—Christopher Edwards, PEOPLE, 1 May 2026
See All Example Sentences for infectious
Brenda Goodman, CNN Money, 6 May 2026
Larsson turned into something of a supernova for virality, whether for her vocal anti-Trump politics, her glittery Y2K style, or her infectious tour choreography.
—Craig Jenkins, Vulture, 4 May 2026
Having Certain Health Conditions Several health conditions, including hormonal, nervous, infectious, and immune system disorders, can cause a dry mouth.
—Colleen Doherty, Verywell Health, 2 May 2026
The guidance advised public health agencies to document and report details of each case of measles, including close contacts and locations visited while a person was infectious.
—Christopher Edwards, PEOPLE, 1 May 2026
See All Example Sentences for infectious
Recent Examples of Synonyms for infectious
catching
Adjective
-
Christian Vázquez, who replaced Diaz in the lineup Monday, figures to take on primary catching duties while Diaz is out.—
Matt Kawahara,
Houston Chronicle,
4 May 2026
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The Braves gained four years and millions of dollars by substituting Olson for Freeman at first base – even though one of those traded was slugging catching prospect Shea Langeliers.—
Dan Schlossberg,
Forbes.com,
15 Apr. 2026
Cite this Entry
“Infectious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infectious. Accessed 16 May. 2026.
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