brain·y

[brey-nee]
adjective, brain·i·er, brain·i·est. Informal.
intelligent; clever; intellectual.

Origin:
1835–45; brain + -y1

brain·i·ly, adverb
brain·i·ness, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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World English Dictionary
brainy (ˈbreɪnɪ) [Click for IPA pronunciation guide]
 
adj , brainier, brainiest
informal clever; intelligent
 
'brainily
 
adv
 
'braininess
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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00:10
Brainy is always a great word to know.
So is gobo. Does it mean:
the offspring of a zebra and a donkey.
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
Etymonline
Word Origin & History

brainy
1845, from brain + -y (2).
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
He would sit out lucky streaks by opponents by relying on the belief that over time his brainy, measured tactics would prevail.
The patterers were the brainy, sophisticated ones-the self-proclaimed aristocracy of the street.
Brainy but easily distracted, the author barely made it through high school and dropped out of college.
He is brainy, he is confident, he is parsimonious with social interaction.
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