See discourse in Webster's New World Roget's A-Z Thesaurus II
noun
The faculty, act, or product of speaking:
speech, talk, utterance, verbalization, vocalization. See wordsSpoken exchange:
chat, colloquy, confabulation, conversation, converse1, dialogue, speech, talk. (Informal) confab. (Slang) jaw. See wordsA formal, lengthy exposition of a topic:
disquisition, dissertation, treatise. See words
verb
To engage in spoken exchange:
chat, confabulate, converse1, speak, talk. (Informal) confab, visit. See words
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