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REFERENCE

counterpart

n.
US //ˈkaʊntɝˌpɑɹt// UK //kˈaʊntəpˌɑːt// coun·ter·part
  1. 1 equivalent person or thing (n.)
    C1 Advanced Formal

    someone or something that has the same job or purpose as another person or thing in a different place.

    a person or thing holding a position or performing a function that corresponds to that of another person or thing in another area.

    Example

    The prime minister met with his French counterpart to discuss the new trade deal.

    Example

    The CEO of the startup spent the afternoon consulting with her counterpart at the established firm to compare operational strategies.

    Usage

    Often used with the possessive (his, her, its) or the preposition 'of'.

  2. 2 matching part (n.)
    C2 Proficiency Formal Literary

    one of two parts that fit together or complete each other.

    one of two parts which complement or complete each other; a thing that forms a natural pair with another.

    Example

    The left earring was lost, and she could not find its counterpart anywhere.

    Example

    The architect designed the north wing as a modern counterpart to the original Victorian structure, balancing old and new materials.

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  1. 3 legal duplicate (n.)
    C2 Proficiency Technical Formal Law

    an exact copy of a legal document.

    a duplicate or copy of a legal deed or document, often executed so that each party may have a copy.

    Example

    Each person signed a counterpart of the contract so they both had a record.

    Example

    The agreement was executed in several counterparts, each of which was deemed an original but all of which together constituted one instrument.

Origin

From Middle English conterpart, countre parte (“duplicate of a legal document”), equivalent to counter- + part. Compare Old French contrepartie, itself from contre (“facing, opposite”) (from Latin contra (“against”)) + partie (“copy of a person or thing”) (originally past participle of partīre (“to divide”)).

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