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See more synonyms for expound on Thesaurus.com
verb (used with object)
  1. to set forth or state in detail: to expound theories.
  2. to explain; interpret.
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verb (used without object)
  1. to make a detailed statement (often followed by on).
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Origin of expound

1250–1300; Middle English expounen, expounden < Old French espondre < Latin expōnere to put out, set forth, explain, equivalent to ex- ex-1 + pōnere to put
Related formsex·pound·er, nounpre·ex·pound, verb (used with object)un·ex·pound·ed, adjective

Synonym study

2. See explain.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for expounder

Historical Examples

  • In fact, the work needed an expounder, and it found one in Mr. Huxley.

    Fragments of science, V. 1-2

    John Tyndall

  • He is the expounder of Revolution in its compulsory and illiberal aspect.

    Lectures on the French Revolution

    John Emerich Edward Dalberg-Acton

  • He is known among us as the expounder of laws natural and divine.

  • The expounder of philosophy breathed deeply, but stuck to her task.

    The Blower of Bubbles

    Arthur Beverley Baxter

  • In each the priest was the expounder of the holy books and laws.

British Dictionary definitions for expounder


  1. (when intr, foll by on or about) to explain or set forth (an argument, theory, etc) in detailto expound on one's theories; he expounded his reasoning
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Derived Formsexpounder, noun

Word Origin

C13: from Old French espondre, from Latin expōnere to set forth, from pōnere to put
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 expounder



c.1300, from Old French espondre "expound (on), set forth, explain," from Latin exponere "put forth, explain, expose, exhibit," from ex- "forth" (see ex-) + ponere "to put, place" (see position); with intrusive -d (cf. sound (n.1)). The usual Middle English form was expoune. Related: Expounded; expounding.

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Online Etymology Dictionary, © 2010 Douglas Harper