[th air-bahy, th air-bahy]


by that; by means of that.
in that connection or relation: Thereby hangs a tale.
by or near that place.
Scot. about that number, quantity, or degree.

Origin of thereby

before 900; Middle English therby, Old English thǣrbī. See there, by1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for thereby

through, with, so

Examples from the Web for thereby

Contemporary Examples of thereby

Historical Examples of thereby

  • Winkleman said only what he had agreed to say; and thereby earned his finger.

    The Leopard Woman

    Stewart Edward White

  • Let Old Eaton have his way, if thereby they might beguile him into paving theirs.

    Tiverton Tales

    Alice Brown

  • But I preferred to let you have it, hoping, as I do, thereby to retain you as my friend down in your parts.

    Albert Durer

    T. Sturge Moore

  • He was now able to sell his wares and thereby maintain his family in comfort.


    Samuel Smiles

  • Thereby not worrying about any slip-ups with the local authorities.

    Arm of the Law

    Harry Harrison

British Dictionary definitions for thereby



by that means; because of that
archaic by or near that place; thereabouts
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for thereby

Old English þærbig "by means of or because of that;" see there + by. Cf. German dabei, Dutch daarbij.

Online Etymology Dictionary, © 2010 Douglas Harper