v. preached, preach·ing, preach·es
1. To proclaim or put forth in a sermon: preached the gospel.
2. To advocate, especially to urge acceptance of or compliance with: preached tolerance and peaceful coexistence.
3. To deliver (a sermon).
1. To deliver a sermon.
2. To give religious or moral instruction, especially in a tedious manner.
preach to the choir/converted
To argue in favor of a viewpoint already held by one's audience.
[Middle English prechen, from Old French preechier, from Late Latin praedicāre, from Latin, to proclaim : prae-, pre- + dicāre, to proclaim; see deik- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The American Heritage Dictionary Blog
Check out our blog, updated regularly, for new words and revised definitions, interesting images from the 5th edition, discussions of usage, and more.