Infect vs Spread

When to use each in English, with meaning, register, and examples.

 InfectSpread
MeaningTo make someone sick by spreading germs or diseases.To open something wide or make it cover a large area.
CEFR levelC1B1
Part of speechverbverb
Usage notesUse 'infect' in medical or health contexts. It’s formal, so avoid it in casual conversations unless discussing illness. Common with diseases or viruses.Use 'spread' when talking about applying something, like a sandwich spread or an idea. It's neutral and suitable for all contexts, but avoid using it too informally when discussing significant topics.

Frequently asked questions: Infect vs Spread

What's the difference between "Infect" and "Spread"?

"Infect" means: To make someone sick by spreading germs or diseases. "Spread" means: To open something wide or make it cover a large area.

When should I use "Infect" and "Spread"?

They can all be used in everyday English.

Are "Infect" and "Spread" the same CEFR level?

"Infect" is at C1, "Spread" is at B1 on the CEFR scale.

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