Which to use
“brain” is a noun and “brained” is an adjective - they look or sound alike but fill different roles in a sentence.
- #1,215
- “brain” frequency rank
- #42,558
- “brained” frequency rank
- 43773
- confusion score
Side-by-Side Comparison
| Feature | brain | brained |
|---|---|---|
| Definition | The control center of the central nervous system of an animal located in the skull which is responsible for perception, cognition, attention, memory, emotion, and action. | Having a particular kind or number of brain. |
Where the eye mixes brain and brained
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.
Look-alike desk: brain vs brained
These two trip readers on the page rather than in the ear: brain is /bɹeɪn/ while brained is /bɹeɪnd/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “brain” sits inside “brained”, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 43773, derived from the frequency rank of both members and their visual similarity.
brain is recorded at frequency rank #1,215, classified as anoun, pronounced /bɹeɪn/. brained is at rank #42,558, tagged as anadj, pronounced /bɹeɪnd/.
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 43773, this pair ranks #236,856 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of brain vs brained
Shared letters: abinr. Private to "brain": -. Private to "brained": de.
"brain" · 5 letters · shape CCVVC · "brained" · 7 letters · shape CCVVCVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "brain" for "brained" ever safe?
In ordinary English text, does "brain" or "brained" show up more?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "brain" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "brained" - compare definitions side by side with the headword page. Word entry
- This pair ranks #236,856 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "brain" and "brained" also get mixed up with nearby pairs, the highest-scored neighbour is "brained vs brainy". 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 #236,856 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.