discoursing Definition

discourse
noun

1. A formal speech or essay on a particular subject.

Thesaurus: lecture, speech, address, oration, dissertation, sermon, treatise, homily, talk.
2. Serious conversation.

verb

intr
discoursed, discoursing
1. To speak or write at length, formally or with authority.

Thesaurus: talk, lecture, converse, debate, confer, dissent, expatiate.

Etymology: 16c as noun in modern sense; 14c, meaning ‘understanding'; 16c as verb: from Latin discursus.