as in spreading
exciting a similar feeling or reaction in others an infectious giggle that got the whole class laughing

Synonyms & Similar Words


Thesaurus Entries Near infectious

Cite this Entry

“Infectious.” Thesaurus, Merriam-Webster, Accessed 24 Apr. 2024.

More from Merriam-Webster on infectious

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!