Which to use
“fatter” and “fatty” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #26,786
- “fatter” frequency rank
- #9,607
- “fatty” frequency rank
- 36393
- confusion score
Side-by-Side Comparison
| Feature | fatter | fatty |
|---|---|---|
| Definition | comparative form of fat: more fat | Containing, composed of, or consisting of fat. |
Where the eye mixes fatter and fatty
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.
Look-alike desk: fatter vs fatty
A purely visual mix-up. fatter (/ˈfæːɾɚ/) and fatty (/ˈfæt.i/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 36393, derived from the frequency rank of both members and their visual similarity.
fatter is recorded at frequency rank #26,786, classified as anadj, pronounced /ˈfæːɾɚ/. fatty is at rank #9,607, tagged as anadj, pronounced /ˈfæt.i/.
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 36393, this pair ranks #303,590 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of fatter vs fatty
Shared letters: aft. Private to "fatter": er. Private to "fatty": y.
"fatter" · 6 letters · shape CVCCVC · "fatty" · 5 letters · shape CVCCV
Known mistypes of this pair
Frequently Asked Questions
Can "fatter" and "fatty" be used interchangeably?
Which is more common, "fatter" or "fatty"?
What to do next
Eye-level mix-up between "fatter" and "fatty" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "fatter" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "fatty" - compare definitions side by side with the headword page. Word entry
- This pair ranks #303,590 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "fatter" and "fatty" also get mixed up with nearby pairs, the highest-scored neighbour is "fader vs fatter". 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 #303,590 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.