Brainiac

Origin

brainmaniac coined in the Superman comic book. The term first appeared in Action Comics #438 in July, 1958. The word itself is a portmanteau of the words brain and maniac, with influence from ENIAC, the name of an early computer.

Full definition of brainiac

Noun

1. (slang, sometimes derogatory) a very intelligent and usually studious, erudite person.

Synonyms

• genius
• pedant
• smart-ass
• wiseguy

Antonyms

• dufus
• dumb-ass
• dumbo
• idiot
• ignoramus