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Definition of mindboggling
mindboggling
/ˈmaɪndˌbɑː.ɡlɪŋ/
mind · bog · gling
Adverb:mindbogglingly
mindboggling Lexical Profile
CEFR
C1
Grade
8
Tier
2
Usage
Top 10k
Syllables
3
mindboggling Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• adjective
1
Overwhelmingly startling, astonishing, or difficult to comprehend due to sheer scale, complexity, or strangeness; often spelled mind-boggling.
Example
"Astronomers deal with mindboggling distances that are measured in billions of light-years."
Synonyms
View all synonyms for mindboggling Antonyms
View all antonyms for mindboggling• Nearby Words
Word Origin & Etymology
Coined in the mid-20th century from 'mind' and 'boggle', the latter originally meaning to startle or shy away in fear (from the Scottish 'bogle', a ghost or goblin).
Cite this Entry
Wordmom. (2026). Definition of Mindboggling. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/mindboggling