the GNU version of the Collaborative International Dictionary of English
adj. Not terrestrial; supernatural; preternatural; hence, weird; appalling; terrific.
The Century Dictionary and Cyclopedia
Not earthly; not terrestrial; supernatural; not like, or as if not proceeding from, anything belonging to the earth; unworldly; hence, weird; appalling: as, an unearthly cry or sight.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. concerned with or affecting the spirit or soul
adj. suggesting the operation of supernatural influences
Word Usage
"Southern Tier's unearthly is an Imperial India Pale Ale that checks in at a huge 11% ABV."