Which to use
“filler” and “filly” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #16,709
- “filler” frequency rank
- #23,832
- “filly” frequency rank
- 40541
- confusion score
Side-by-Side Comparison
| Feature | filler | filly |
|---|---|---|
| Definition | One who fills. | A young female horse. |
Where the eye mixes filler and filly
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. filler runs 6 letters (CVCCVC) against filly's 5 (CVCCV) - the length gap alone is often enough to separate them once you know to check it.
Visual trap between filler and filly
A purely visual mix-up. filler (/ˈfɪlə(ɹ)/) and filly (/ˈfɪli/) 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 40541, derived from the frequency rank of both members and their visual similarity.
filler is recorded at frequency rank #16,709, classified as anoun, pronounced /ˈfɪlə(ɹ)/. filly is at rank #23,832, tagged as anoun, pronounced /ˈfɪli/.
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 40541, this pair ranks #266,629 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of filler vs filly
Shared letters: fil. Private to "filler": er. Private to "filly": y.
"filler" · 6 letters · shape CVCCVC · "filly" · 5 letters · shape CVCCV
Known mistypes of this pair
Frequently Asked Questions
Do "filler" and "filly" mean the same thing in a sentence?
Frequency check: "filler" vs "filly" - 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 "filler" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "filly" - compare definitions side by side with the headword page. Word entry
- This pair ranks #266,629 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "filler" and "filly" 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 #266,629 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.