earth·ly (ûrth?l?)adj.1. Of, relating to, or characteristic of this earth.2. a. Terrestrial; not heavenly or divine: earthly existence.b. Worldly: earthly delights; one’s earthly possessions.3. Conceivable; possible: no earthly meaning whatever.earth?li·ness n.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.