Which to use
“filling” is a verb and “Fuelling” is a name - they look or sound alike but fill different roles in a sentence.
- #5,221
- “filling” frequency rank
- #47,634
- “Fuelling” frequency rank
- 52855
- confusion score
Side-by-Side Comparison
| Feature | filling | Fuelling |
|---|---|---|
| Definition | present participle and gerund of fill | A surname from German. |
Letter map: filling vs Fuelling
Shared letters muted; letters that set filling and Fuelling apart highlighted. Shared run: 6. filling runs 7 letters (CVCCVCC) against Fuelling's 8 (CVVCCVCC) - the length gap alone is often enough to separate them once you know to check it.
Role in the sentence - filling and Fuelling
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: filling is averb and Fuellinganame. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 52855, derived from the frequency rank of both members and their visual similarity.
filling is recorded at frequency rank #5,221, classified as averb, pronounced /ˈfɪlɪŋ/. Fuelling is at rank #47,634, tagged as aname.
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 52855, this pair ranks #153,665 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of filling vs Fuelling
Shared letters: fgiln. Private to "filling": -. Private to "Fuelling": eu.
"filling" · 7 letters · shape CVCCVCC · "Fuelling" · 8 letters · shape CVVCCVCC
Known mistypes of this pair
Frequently Asked Questions
Do "filling" and "Fuelling" mean the same thing in a sentence?
In ordinary English text, does "filling" or "Fuelling" show up more?
After this comparison
Pair "filling" vs "Fuelling" is on the table, pick a follow-up below.
- Full dictionary entry for "filling" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "Fuelling" - compare definitions side by side with the headword page. Word entry
- This pair ranks #153,665 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "filling" and "Fuelling" also get mixed up with nearby pairs, the highest-scored neighbour is "felling vs Fuelling". 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 #153,665 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.