ideamonger

[ ahy-dee-uh-muhng-ger, -mong- ]
/ aɪˈdi əˌmʌŋ gər, -ˌmɒŋ- /

noun

a person who originates and promotes or deals in ideas.

Origin of ideamonger

First recorded in 1830–40; idea + monger
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019