Brainiac

n. capable, thoughtful playful

What it means

A person regarded as exceptionally intelligent.

Reach for it when giving playful praise for conspicuous mental ability

The friendly brainiac solved the scheduling puzzle and explained it without jargon.

Words to choose between 6

By register, from playful at the top to literary at the bottom. Tap a word to see when it fits.
playful
professional
formal
  • playful

    smart cookie

    Fits when affectionate informal praise should feel socially warm

    Careful The phrase is folksy and may sound patronizing in professional recognition.

  • playful

    whiz

    Fits when quick impressive skill in a particular area is the point

    Careful Whiz can sound childish and does not imply broad intelligence.

  • professional

    prodigy

    Fits when exceptional ability appears at an unusually young age

    Careful Prodigy is age-bound and wrong for an accomplished adult.

  • professional

    scholar

    Fits when deep learning and research are the respected strengths

    Careful Scholar describes training and work, not necessarily unusual intelligence.

  • formal

    genius

    Fits when exceptional intellectual or creative ability is credibly established

    Careful Genius is a much stronger claim and can burden the person with expectations.

  • formal

    intellectual

    Fits when serious engagement with ideas defines the person

    Careful An intellectual may be thoughtful without unusually high raw ability.

Opposites 3

  • fool
  • dullard
  • slow thinker

Common phrases 3

  • young brainiac

    The young brainiac invited three classmates to test the solution.

  • resident brainiac

    Our resident brainiac found the faulty assumption in the spreadsheet.

  • friendly brainiac

    A friendly brainiac stayed after class to help with the puzzle.

Usage notes

Keep in mind

Brainiac is informal and can stereotype someone as intellect without personality. It may be affectionate or alienating.

Definitions and examples are written for this site. How words are chosen Recording: Commander Keane, Australian accent, from Wikimedia Commons, CC BY-SA 4.0 Updated