expound

 
Pronunciation: /ɪkˈspaʊnd, ɛk-/

verb

[with object]
  • present and explain (a theory or idea) in detail: he was expounding a powerful argument [no object]: he declined to expound on his decision
  • explain the meaning of (a literary or doctrinal work): the abbess expounded the scriptures to her nuns

Derivatives

expounder

noun

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