A new word…
verb: expound; 3rd person present: expounds; past tense: expounded; past participle: expounded; gerund or present participle: expounding
present and explain (a theory or idea) in detail.“he was expounding a powerful argument”
synonyms: present, put forward, set forth, proffer, offer, advance, propose, propound, frame, give an account of, recount; Moreelaborate on, expand on, expatiate on, dwell on, harp on, discuss at length“he expounded on the virtues of books and learning”
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.