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Synonyms

expound

American  
[ik-spound] / ɪkˈspaʊnd /

verb (used with object)

expounds, present (3rd person singular) expounded, past participle, past expounding present participle
  1. to set forth or state in detail.

    to expound theories.

  2. to explain; interpret.


verb (used without object)

expounds, present (3rd person singular) expounded, past participle, past expounding present participle
  1. to make a detailed statement (often followed byon ).

expound British  
/ ɪkˈspaʊnd /

verb

  1. to explain or set forth (an argument, theory, etc) in detail

    to expound on one's theories

    he expounded his reasoning

"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

Usage

What are other ways to say expound? To expound something is to set it forth or state it in detail. How does expound differ from elucidate, explain, and interpret? Find out on Thesaurus.com.

Other Word Forms

Derived Forms

Etymology

Origin of expound

First recorded in 1250–1300; Middle English expounen, expounden, from Old French espondre, from Latin expōnere “to put out, set forth, explain,” equivalent to ex- ex- 1 + pōnere “to put”

Explanation

If your grandmother's handwritten pie recipe calls for "some sugar," "plenty of butter," and "sliced apples," you might ask her to expound by adding measurements of how much of each to use. When you expound, you explain or provide details. Expound came into English from a 14th-century French word espondre meaning "to elaborate" or "put forth." Often when you expound something you are clarifying or giving the particulars. A more formal way to expound is to offer exposition, often going line by line to explain precise meanings in a text or legal document.

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Vocabulary lists containing expound

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Rock also got to expound on the classic period where he released some of the best comedy specials ever made.

From Los Angeles Times • May 13, 2026

It is common for justices to spar in their written opinions, and they sometimes expound on their legal disagreements in speeches or interviews.

From The Wall Street Journal • Apr. 15, 2026

The company is set to expound on the results at Qubits 2026, a two-day conference at the end of January.

From Barron's • Jan. 6, 2026

Madison that "it is emphatically the province and duty of the judicial department to say what the law is. Those who apply the rule to particular cases must, of necessity, expound and interpret the rule."

From Salon • Feb. 12, 2025

He could expound on nearly any subject in class until the teacher had to ask him to stop, and if he’d ever made less than a hundred on a test, I wasn’t aware of it.

From "October Sky" by Homer Hickam

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