expound

Từ điển Oxford Advanced Learner 8th

ex·pound [expound expounds expounded expounding] BrE [ɪkˈspaʊnd] NAmE [ɪkˈspaʊnd] verb transitive, intransitive (formal)
to explain sth by talking about it in detail
•~ sth (to sb) He expounded his views on the subject to me at great length.
•the theory of language expounded by Chomsky
•~ on sth We listened as she expounded on the government's new policies.
Verb forms:

Word Origin:
Middle English expoune (in the sense ‘explain (what is difficult)’): from Old French espon-, present tense stem of espondre, from Latin exponere ‘expose, publish, explain’, from ex- ‘out’ + ponere ‘put’. The origin of the final -d (recorded from the Middle English period) is uncertain (compare with ↑compound, ↑propound).

Example Bank:
•She expounded her theory further in the course of her talk.
•These ideas were originally expounded by Plato.

• Từ đồng nghĩa / Synonyms:
  set forth, exposit, elaborate, lucubrate, expatiate, enlarge, flesh out, expand, dilate
• Từ trái nghĩa / Antonyms:
  abridge, foreshorten, abbreviate, shorten, cut, contract, reduce