Which to use
“filly” is a noun and “full” is an adjective - they look or sound alike but fill different roles in a sentence.
- #23,832
- “filly” frequency rank
- #262
- “full” frequency rank
- 24094
- confusion score
Side-by-Side Comparison
| Feature | filly | full |
|---|---|---|
| Definition | A young female horse. | Containing the maximum possible amount that can fit in the space available. |
Where the eye mixes filly and full
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Why the eye confuses filly with full
These two trip readers on the page rather than in the ear: filly is /ˈfɪli/ while full is /fʊl/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 24094, derived from the frequency rank of both members and their visual similarity.
filly is recorded at frequency rank #23,832, classified as anoun, pronounced /ˈfɪli/. full is at rank #262, tagged as anadj, pronounced /fʊl/.
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 24094, this pair ranks #404,529 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of filly vs full
Shared letters: fl. Private to "filly": iy. Private to "full": u.
"filly" · 5 letters · shape CVCCV · "full" · 4 letters · shape CVCC
Known mistypes of this pair
Frequently Asked Questions
Can "filly" and "full" be used interchangeably?
Frequency check: "filly" vs "full" - which ranks higher?
Useful next steps
Eye-level mix-up between "filly" and "full" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "filly" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "full" - compare definitions side by side with the headword page. Word entry
- This pair ranks #404,529 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "filly" and "full" also get mixed up with nearby pairs, the highest-scored neighbour is "feely vs filly". 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 #404,529 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.