English Reference
noun

acknowledgment

n.
US /ækˈnɑɫɪdʒmənt/ UK /ɐknˈɒlɪdʒmənt/ ac·knowl·edg·ment UK spelling acknowledgment's, acknowledgment's

  1. 01 B2 Upper Intermediate

    the act of admitting that something exists or is true.

    the act of recognizing the existence, truth, or validity of something.

    Simple

    The government's statement was a clear acknowledgment that the policy had failed.

    In context

    The CEO's public acknowledgment of the firm's strategic errors was seen as a necessary step toward regaining investor confidence.

    Usage

    Often followed by a 'that' clause or the preposition 'of'.

  2. 02 B2 Upper Intermediate Formal

    a letter or message that tells you someone has received what you sent.

    a communication informing the sender that their message, document, or parcel has been received.

    Simple

    I am still waiting for an acknowledgment of my job application.

    In context

    The solicitor sent a formal acknowledgment of the documents, confirming they had arrived before the legal deadline.

    Usage

    Commonly used in business and legal contexts.

  3. 03 B2 Upper Intermediate

    something you do or say to show thanks for help or to give credit.

    an expression of gratitude or a public credit given to someone for their contribution.

    Simple

    The author included a long list of acknowledgments at the start of the book.

    In context

    The scientist received a special acknowledgment in the journal for her foundational research on the project.

    Usage

    Often used in the plural form ('acknowledgments') in books or academic papers.

  4. 04 C1 Advanced Technical Computing

    a signal sent between computers to show that data was received correctly.

    a response (often called an ACK) sent by a receiver to indicate successful receipt of a transmission.

    Simple

    The system waits for an acknowledgment from the server before sending more data.

    In context

    Network latency increased because the client failed to process the acknowledgment signals in a timely manner.

  5. 05 C1 Advanced FormalTechnical Law

    a formal statement that a legal document is real and valid.

    a formal declaration or document recognizing the fulfillment of a legal requirement.

    Simple

    The deed requires an acknowledgment by a public official to be valid.

    In context

    The notary provided the necessary acknowledgment to certify that the signature on the contract was authentic.

    certificationattestation

Webber said there had not been enough acknowledgment from mental health organisations of the risk of violence.

The Guardian· 5 Sept 2026

In Spanish, this happens through explanation and negotiation, while in Korean, it is often done through a clearer acknowledgment of fault, especially when social power is involved.

Phys.org· 31 Aug 2026

From acknowledge + -ment.

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

This entry
Level B2 · Upper Intermediate
Frequency Occasional
Updated