1. Not of this world; spiritual.
2. Concerned with matters of the spirit or soul.
3. Not wise to the ways of the world; naive: "This now is the story of an unworldly young scientist" (John Simon).

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.