Debt vs Obligation

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

Debt

Top 2,000 (common)B2noun

Obligation

Top 2,000 (common)B2noun
 DebtObligation
Pronunciation🇬🇧 /["/det/"]/🇺🇸 /["/det/"]/🇬🇧 /["/ˌɒblɪˈɡeɪʃn/"]/🇺🇸 /["/ˌɑːblɪˈɡeɪʃn/"]/
MeaningMoney that someone owes to another person or organization.Something you must do; a duty or responsibility.
ExampleAfter losing his job, he found himself in significant debt.She felt a strong obligation to help her friends in need.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 2,000 (common)
CEFR levelB2B2
Part of speechnounnoun
Collocationsbig, crippling, enormous, be burdened with, have, owe (somebody), fall due, stand at something, total something, collection, collector, payment, of debt, a burden of debt, payment of a debt, repayment of a debt, serious, get into, go into, slip into, in debt, out of debt, deeply in debt, heavily in debt, great, owe, acknowledge, recognize, in somebody’s debt, debt to, owe a debt of gratitude to somebodycontractual, legal, statutory, carry out, discharge, fulfil/​fulfill, arise from something, under an obligation, without obligation, obligation of, contractual, legal, statutory, carry out, discharge, fulfil/​fulfill, arise from something, under an obligation, without obligation, obligation of
Antonymswealth, surplusfreedom, option, choice
Common mistakesConfusing 'debt' with 'dead' in pronunciation., Using 'debt' as a verb instead of a noun.Confused with 'obligated' — remember 'obligation' is the noun., Using 'obligation' with incorrect prepositions — typically used with 'to' (e.g., obligation to pay)., Overusing in casual speech — more common in formal contexts.
Usage notesUse 'debt' in financial contexts, such as when discussing loans or obligations. It is neutral language, suitable for both casual and formal discussions. Avoid using it in personal insults or overly informal contexts.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.

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Debt

Frequently asked questions: Debt vs Obligation

What's the difference between Debt and Obligation?

Debt: Money that someone owes to another person or organization. Obligation: Something you must do; a duty or responsibility.

Are Debt and Obligation the same CEFR level?

Debt: B2, Obligation: B2 on the CEFR scale.

What part of speech are Debt and Obligation?

Debt: noun, Obligation: noun.

Can you show an example of each?

Debt: After losing his job, he found himself in significant debt. Obligation: She felt a strong obligation to help her friends in need.

Can I use Debt and Obligation interchangeably?

Not always. Debt and Obligation are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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