# brainy

/ˈbɹeɪni/ (US) · /bɹˈeɪni/ (UK) · CEFR B1 · Adjective

Source: https://englishreference.com/word/brainy
Updated: 2026-10-18

## Definition

very smart and quick to learn new things, especially school work. You use it for people who always seem to know the answers.

For teachers: having high intelligence and a strong ability to learn quickly. Typically used to describe people who excel at academic or analytical tasks.

## Examples

- My brainy sister helps me with math homework.
- Our new classmate is really brainy and always finishes the science quiz first.
- Despite her brainy reputation at university, she explains difficult ideas in simple words everyone understands.

## Synonyms

Smart, clever, Bright, intelligent, Brilliant, Sharp, gifted

## Antonyms

stupid, dumb

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.