- intellectually overwhelming: a mind-boggling puzzle.
- emotionally or psychologically overwhelming; mind-blowing.
Origin of mind-boggling
First recorded in 1960–65
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for mind-boggling
Science allows for the unlikely, the extremely rare, the mind-boggling—but it does not allow for the impossible.It’s Impossible to Cure a Baby With HIV, No Matter How Seductive the Hope May Be
July 10, 2014
The forests, with their mind-boggling biodiversity, are a staggering 10,000 times older than those of North America and Europe.Exploring the Amazon, While We Still Can
May 15, 2014
The notion of “good bacteria” is now familiar, as is the mind-boggling variety of different bacteria we have in and on us.Buy That Breast Milk!
October 22, 2013
Seaman's mind-boggling dereliction of responsibility harms the state whose interests he was, and is, tasked with protecting.Bullying Israeli Government Flack Sparks Diplomatic Row—Among Other Concerns
August 21, 2013
Could a mind-boggling vendetta be behind the ricin letters sent to Obama and Wicker?Paul Kevin Curtis and J. Everett Dutschke: Epic Feud and Ricin Letters
April 25, 2013
- informal astonishing; bewildering
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for mind-boggling
Online Etymology Dictionary, © 2010 Douglas Harper