Anything contagious, such as the flu, is always automatically infectious: if you can catch it from someone, it's being passed to you via an infectious agent, which is the thing that gets you …

CONTAGIOUS definition: capable of being transmitted by bodily contact with an infected person or object. See examples of contagious used in a sentence.

A contagious disease can be caught by touching someone who has the disease or by touching an infected object, or by an infected person coughing, sneezing, etc. near you:

Definition of contagious adjective from the Oxford Advanced Learner's Dictionary. a contagious disease spreads by close contact between people. Scarlet fever is highly contagious. (figurative) His …

A feeling or attitude that is contagious spreads quickly among a group of people. Laughing is contagious. Antonio has a contagious enthusiasm for the beautiful aspect of food.

Contagious, infectious are usually distinguished in technical medical use. Contagious, literally "communicable by contact,'' describes a very easily transmitted disease as influenza or the common …

Dec 21, 2025 · Experts reveal the signs that you're no longer at risk of spreading illnesses like COVID, flu and strep throat to others.

Dec 14, 2025 · contagious (comparative more contagious, superlative most contagious) Last year's flu strain was so contagious that everybody in town got sick! Wearing jeans was a contagious fad at that …

1. Of or relating to contagion. 2. Transmissible by direct or indirect contact; communicable: a contagious disease. 3. Capable of transmitting a disease: stayed at home until he was no longer contagious. 4. …

You should probably postpone dinner if your date's cold is contagious — that means it's easily spread and likely to get you sick. Contagious actually evolved from contagio, the Latin phrase for “contact."