English Reference
noun

obligation

n.
US /ˌɑbɫəˈɡeɪʃən/ UK /ˌɒblɪɡˈeɪʃən/ obli·ga·tion UK spelling obligation's, obligation's

  1. 01 B2 Upper Intermediate

    something you must do because it is your duty or because of a law.

    a social, legal, or moral requirement that compels an individual to follow a particular course of action.

    Simple

    The company has a legal obligation to ensure the safety of its workers.

    In context

    Citizens have a moral obligation to assist those in need, even when no specific law mandates such intervention.

    Usage

    Often used with the verbs 'meet', 'fulfill', or 'honour'.

    Pitfall
    I have the obligation of help him. I have an obligation to help him.

    The noun 'obligation' is followed by the infinitive 'to help', not 'of helping'.

  2. 02 C1 Advanced FormalTechnical Law

    a formal agreement or a debt that you are required to pay.

    a formal agreement stipulating a specified action or payment; often refers to the document or the financial debt itself.

    Simple

    The bank reviewed the borrower's financial obligations before approving the new loan.

    In context

    The defendant failed to meet his contractual obligations, leading to a significant lawsuit regarding the unpaid debts.

    Usage

    In financial contexts, it frequently refers to bonds or fixed-income securities.

  3. 03 C2 Proficiency Formal

    a feeling that you should do something for someone because they helped you.

    a state of being indebted to someone for a favour or service rendered.

    Simple

    He felt a sense of obligation toward the mentor who helped him start his career.

    In context

    Having received such generous support during her illness, she felt a profound sense of obligation to give back to the community clinic.

    Teacher's tip

    This sense is often expressed through the phrase 'under an obligation' or 'sense of obligation'.

Another official familiar with the matter told Al Jazeera that Hamas and Kushner met in the town of Alamein “with the objective of translating the roadmap’s obligations into concrete, verifiable steps”.

Al Jazeera· 16 Aug 2026

Under the new arrangement, Egerton was under no obligation to spend more than the minimum on production.

The Guardian· 12 Aug 2026

From Middle English obligacioun, from Old French obligacion, from Latin obligatio, obligationem, from obligatum (past participle of obligare), from ob- (“to”) + ligare (“to bind”), from Proto-Indo-European *leyǵ- (“to bind”).

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin ine-pro *leyǵ-
Level B2 · Upper Intermediate
Frequency Common
Updated