Which to use
“brains” is a noun and “brainy” is an adjective - they look or sound alike but fill different roles in a sentence.
- #6,337
- “brains” frequency rank
- #45,821
- “brainy” frequency rank
- 52158
- confusion score
Side-by-Side Comparison
| Feature | brains | brainy |
|---|---|---|
| Definition | plural of brain | Very intellectually capable. |
Where the eye mixes brains and brainy
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.
Why the eye confuses brains with brainy
These two trip readers on the page rather than in the ear: brains is /bɹeɪnz/ while brainy is /ˈbɹeɪni/. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - s in “brains” becomes y in “brainy”, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 52158, derived from the frequency rank of both members and their visual similarity.
brains is recorded at frequency rank #6,337, classified as anoun, pronounced /bɹeɪnz/. brainy is at rank #45,821, tagged as anadj, pronounced /ˈbɹeɪni/.
Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.
With a confusion score of 52158, this pair ranks #159,410 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of brains vs brainy
Shared letters: abinr. Private to "brains": s. Private to "brainy": y.
"brains" · 6 letters · shape CCVVCC · "brainy" · 6 letters · shape CCVVCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "brains" for "brainy" ever safe?
Frequency check: "brains" vs "brainy" - which ranks higher?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "brains" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "brainy" - compare definitions side by side with the headword page. Word entry
- This pair ranks #159,410 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "brains" and "brainy" also get mixed up with nearby pairs, the highest-scored neighbour is "brainy vs brin". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #159,410 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.