Choice and use of words in speech or writing.(noun)
Degree of clarity and distinctness of pronunciation in speech or singing; enunciation.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "diction" in a sentence
"Shit, now my diction is all off b/c I in no way intend to equate you or anyone with blogtards."
"Is this about intellect or insane skills in diction?"
"I think it's the sort of piece where if the diction is really energetically articulated, it carries a lot of the musical line with it, and the mezzo's diction was particularly clear."