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Definition of featherbrain
featherbrain
/ˈfɛð.ɚˌbɹeɪn/
feath · er · brain
Plural:featherbrains
•Adjective:featherbrained
featherbrain Lexical Profile
CEFR
C1
Grade
8
Tier
2
Usage
Rare
Syllables
3
featherbrain Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
A foolish, scatterbrained, or frivolous person who lacks serious thought or concentration.
Example
"Only a complete featherbrain would forget to lock the front door before leaving on a two-week vacation."
Synonyms
View all synonyms for featherbrain Antonyms
View all antonyms for featherbrain• Nearby Words
Word Origin & Etymology
First recorded in the early 19th century, this English compound combines 'feather' and 'brain' to figuratively suggest a mind as light, insubstantial, and easily blown about as a feather.
Cite this Entry
Wordmom. (2026). Definition of Featherbrain. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/featherbrain