Assume vs Incur

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

 AssumeIncur
MeaningTo take something as true without proof.To cause something to happen to yourself, usually something bad like a cost or penalty.
CEFR levelB2C1
Part of speechverbverb
Usage notesCommonly used in everyday conversation and writing. Avoid using 'assume' in very formal contexts where more precise language is needed.Used mostly in formal contexts such as finance or legal matters. Avoid using in casual conversation.

Frequently asked questions: Assume vs Incur

What's the difference between "Assume" and "Incur"?

"Assume" means: To take something as true without proof. "Incur" means: To cause something to happen to yourself, usually something bad like a cost or penalty.

When should I use "Assume" and "Incur"?

They can all be used in everyday English.

Are "Assume" and "Incur" the same CEFR level?

"Assume" is at B2, "Incur" is at C1 on the CEFR scale.