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Word of the Day Tuesday, June 9, 2026

infectious

/ɪnˈfɛktɪəs/ adjective · British & US
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What does infectious mean?

adjective

Causing or spreading disease; highly contagious. Having a strong and often unpleasant influence on people's emotions or behavior.

Example

"The infectious laughter of the children filled the room."

Definition generated by AI and curated by RJS Tech Solutions LLP.

Synonyms for infectious

Antonyms of infectious

Rhymes with infectious

Etymologically related