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Definition of brainiac

brainiac

/ˈbreɪ.ni.æk/
brain · i · ac
Plural:brainiacs
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brainiac Lexical Profile

brainiac Game Scores & Validity

• noun

1

North American A very intelligent, studious, or academically gifted person (used informally).

Example

"Whenever we get stuck on a difficult calculus problem, we ask the resident brainiac in our study group for help."

Synonyms
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Antonyms
View all antonyms for brainiac

• Rhymes for brainiac

• Nearby Words

braindead
brainfart
brainfood
brainiac
braininess
brainless
brainlessly

Word Origin & Etymology

Coined in 1958 by comic book writer Otto Binder and artist Al Plastino as a blend of "brain" and "maniac" (also influenced by the 1946 computer ENIAC) for the name of a hyper-intelligent alien supervillain in the Superman comic series.

Cite this Entry

Wordmom. (2026). Definition of Brainiac. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/brainiac
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