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Definition of dunderhead
dunderhead
/ˈdʌn.dɚˌhɛd/
dun · der · head
Plural:dunderheads
•Adjective:dunderheaded
dunderhead Lexical Profile
CEFR
C2
Grade
10
Tier
2
Usage
Rare
Syllables
3
dunderhead Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
A stupid, slow-witted, or gullible person; a blockhead or dunce.
Example
"Only a complete dunderhead would leave the front door wide open during a snowstorm."
Synonyms
View all synonyms for dunderhead Antonyms
View all antonyms for dunderhead• Rhymes for dunderhead
Word Origin & Etymology
First recorded in the early 17th century, 'dunderhead' combines 'head' with 'dunder,' a dialectal or Dutch-derived word meaning 'thunder' (compare 'blunderbuss' from Dutch 'donderbus', literally 'thunder-gun').
Cite this Entry
Wordmom. (2026). Definition of Dunderhead. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/dunderhead