Liability vs Obligation

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

 LiabilityObligation
MeaningA legal responsibility for something.Something you must do; a duty or responsibility.
Registerformal-
CEFR level-B2
Part of speechnoun
Usage notesUsed in legal and financial contexts to describe responsibility for debts or damages. Avoid in casual conversations.Use 'obligation' in both formal and informal contexts when discussing responsibilities or duties. It's appropriate in legal, academic, or personal situations but less common in casual conversations.

Frequently asked questions: Liability vs Obligation

What's the difference between "Liability" and "Obligation"?

"Liability" means: A legal responsibility for something. "Obligation" means: Something you must do; a duty or responsibility.

When should I use "Liability" and "Obligation"?

"Liability" is formal.

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