keynoter

[ kee-noh-ter ]
/ ˈkiˌnoʊ tər /

noun

a person who delivers a keynote address.

Origin of keynoter

An Americanism dating back to 1925–30; keynote + -er1
Also called keynote speaker.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019