Pronunciation: /ˈbreɪniæk/
noun a very intelligent person, especially one who is exceptionally skilled in academic pursuits
A1 My friend is a real brainiac when it comes to math.
A2 She may seem like a brainiac, but she struggles with spelling.
B1 The brainiac in our class always has the answer to every question.
B2 Being a brainiac, he excels in all subjects at school.
C1 The renowned scientist is considered a brainiac in the field of physics.
C2 As a brainiac, she has published numerous research papers in prestigious journals.
formal The brainiac in our group always has the answer to the most difficult questions.
informal My friend is such a brainiac when it comes to math.
slang That brainiac over there knows everything about computers.
figurative She's a real brainiac when it comes to solving puzzles.
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