adj.
- Too deep to be fathomed or measured.
- Too obscure or complicated to be understood.
fathomlessness fath'om·less·ness n.
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.
