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infectious

When talking about diseases, 'infectious' describes how a germ can move from one person to another. It is often used with words like 'highly' or 'extremely' to show how fast it spreads. When talking about emotionslike laughter or excitementit is used as a metaphor. It means the feeling is so strong that other people around you start to feel it too.

💬Casual Conversation

🎬Tuesday afternoon, Chloe is procrastinating on a term paper in the library.
Eleanor Smith

DEAR CHLOE IS THAT COLD YOU HAVE INFECTIOUS? I DONT WANT TO CATCH IT.

Eleanor Smith
Chloe Smith
Chloe Smith

it's just allergies grandma, chill out. you're not gonna catch anything lol

💡
Eleanor is using 'infectious' in its medical sense to express concern about contagion. Chloe responds with casual internet slang ('lol') and the phrasal verb 'chill out', reflecting the generational gap in their communication styles.

Meanings

adjective

Capable of being transmitted by infection to people, animals, or other living hosts.

"The doctor warned that the virus is highly infectious if not treated immediately."

adjective

Likely to spread or influence others quickly; catching.

"Her enthusiasm for the project was infectious, and soon the whole team was excited."

Last Updated: May 22, 2026Report an Error