Which to use
“filling” is a verb and “fitting” is an adjective - they look or sound alike but fill different roles in a sentence.
- #5,221
- “filling” frequency rank
- #6,053
- “fitting” frequency rank
- 11274
- confusion score
Side-by-Side Comparison
| Feature | filling | fitting |
|---|---|---|
| Definition | present participle and gerund of fill | That fits. |
Where the eye mixes filling and fitting
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.
Look-alike desk: filling vs fitting
These two trip readers on the page rather than in the ear: filling is /ˈfɪlɪŋ/ while fitting is /ˈfɪtɪŋ/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (verb vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 11274, 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/. fitting is at rank #6,053, tagged as anadj, pronounced /ˈfɪtɪŋ/.
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 11274, this pair ranks #487,928 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of filling vs fitting
Shared letters: fgin. Private to "filling": l. Private to "fitting": t.
"filling" · 7 letters · shape CVCCVCC · "fitting" · 7 letters · shape CVCCVCC
Known mistypes of this pair
Frequently Asked Questions
Do "filling" and "fitting" mean the same thing in a sentence?
Which is more common, "filling" or "fitting"?
After this comparison
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "filling" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "fitting" - compare definitions side by side with the headword page. Word entry
- This pair ranks #487,928 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "filling" and "fitting" also get mixed up with nearby pairs, the highest-scored neighbour is "filling 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 #487,928 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.