vb when intr, foll by: on or about to explain or set forth (an argument, theory, etc.) in detail
to expound on one's theories, he expounded his reasoning
(C13: from Old French espondre, from Latin exponere to set forth, from ponere to put)
English Collins Dictionary - English Definition & Thesaurus
describe, elucidate, explain, explicate (formal) illustrate, interpret, set forth, spell out, unfold
English Collins Dictionary - English synonyms & Thesaurus
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