Which to use
“big” is an adjective and “but” is a preposition - they look or sound alike but fill different roles in a sentence.
- #200
- “big” frequency rank
- #25
- “but” frequency rank
- 225
- confusion score
Side-by-Side Comparison
| Feature | big | but |
|---|---|---|
| Definition | Of great size, large. | Apart from, except (for), excluding. |
Where the eye mixes big and but
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Visual trap between big and but
These two trip readers on the page rather than in the ear: big is /bɪɡ/ while but is /ˈbʌt/. 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 (adjective vs preposition), which is usually the fastest check. Our composite confusion score for this pair is 225, derived from the frequency rank of both members and their visual similarity.
big is recorded at frequency rank #200, classified as anadj, pronounced /bɪɡ/. but is at rank #25, tagged as aprep, pronounced /ˈbʌt/.
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 225, this pair ranks #529,709 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of big vs but
Shared letters: b. Private to "big": gi. Private to "but": tu.
"big" · 3 letters · shape CVC · "but" · 3 letters · shape CVC
Frequently Asked Questions
Can "big" and "but" be used interchangeably?
In ordinary English text, does "big" or "but" show up more?
After this comparison
Eye-level mix-up between "big" and "but" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "big" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "but" - compare definitions side by side with the headword page. Word entry
- This pair ranks #529,709 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "big" and "but" also get mixed up with nearby pairs, the highest-scored neighbour is "BFS vs big". Nearby pair
Confusion rank #529,709 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.