brainy

UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈbreɪni/US:USA pronunciation: IPA and respellingUSA pronunciation: IPA/ˈbreɪni/ ,USA pronunciation: respelling(brā′nē)

Inflections of 'brainy' (adj):
brainier
adj comparative
brainiest
adj superlative

WordReference Random House Learner's Dictionary of American English © 2025
brain•y /ˈbreɪni/USA pronunciation   adj., -i•er, -i•est. Informal.
  1. Informal Termsintelligent;
    clever;
    intellectual:I liked her: she was brainy, beautiful, and kind.
brain•i•ness, n. [uncountable]

WordReference Random House Unabridged Dictionary of American English © 2025
brain•y  (brā′nē),USA pronunciation adj., brain•i•er, brain•i•est. [Informal.]
  1. Informal Termsintelligent;
    clever;
    intellectual.
  • brain + -y1 1835–45
brain′i•ly, adv. 
brain′i•ness, n. 

Collins Concise English Dictionary © HarperCollins Publishers::
brainy / ˈbreɪnɪ/ (brainier, brainiest)
  1. clever; intelligent
ˈbraininess

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