Definition of contagious
- contagious diseases
- contagious people
- a contagious ward
- contagious enthusiasm
- contagious laughter
It's a highly contagious virus.
I have a cold and I'm still contagious.
I'm sick, but the doctor says I'm not contagious.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'contagious.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
: able to be passed from one person or animal to another by touching
: having a sickness that can be passed to someone else by touching
: capable of being easily spread to others : causing other people to feel or act a similar way
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