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Synonyms

infective

American  
[in-fek-tiv] / ɪnˈfɛk tɪv /

adjective

  1. infectious.


infective British  
/ ɪnˈfɛktɪv /

adjective

  1. capable of causing infection

  2. a less common word for infectious

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms


Etymology

Origin of infective

First recorded in 1350–1400; Middle English word from Medieval Latin word infectīvus. See infect, -ive


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

"It is certainly not as infective as say flu or COVID-19, and requires often fairly prolonged close contact before transmission takes place," said Andrew Lee, Professor of Public Health at the University of Sheffield.

From Barron's ● Mar. 19, 2026

He said that "missed opportunities" to diagnose Mr Campbell with a heart infection known as infective endocarditis had "not more than minimally contributed to his death on the balance of probabilities".

From BBC ● Apr. 14, 2025

CJD is the most prominent of the handful of diseases, all fatal, that result when prions, proteins of uncertain function that are abundant in the brain, misfold into an infective form that spreads widely.

From Science Magazine ● Mar. 21, 2024

They looked for national trends in deaths caused by infective endocarditis, plus differences in deaths related to age, sex, race and geography among states from 1999-2020.

From Science Daily ● Dec. 13, 2023

That virus was just so damned infective she didn’t see how it would stay in one room.

From "The Hot Zone" by Richard Preston

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