Which to use
“bad” is an adjective and “by” is a preposition - they look or sound alike but fill different roles in a sentence.
- #8,759
- “bad” frequency rank
- #2,381
- “by” frequency rank
- 11140
- confusion score
Side-by-Side Comparison
| Feature | bad | by |
|---|---|---|
| Definition | Malo | A, en. |
Where the eye mixes bad and by
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Visual trap between bad and by
These two trip readers on the page rather than in the ear: bad is /bæd/ while by is [bɛi]. 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 (adjective vs preposition), which is usually the fastest check. Our composite confusion score for this pair is 11140, derived from the frequency rank of both members and their visual similarity.
bad is recorded at frequency rank #8,759, classified as anadj, pronounced /bæd/. by is at rank #2,381, tagged as aprep, pronounced [bɛi].
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 11140, this pair ranks #296,131 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of bad vs by
Shared letters: b. Private to "bad": ad. Private to "by": y.
"bad" · 3 letters · shape CVC · "by" · 2 letters · shape CV
Frequently Asked Questions
Can "bad" and "by" be used interchangeably?
Which is more common, "bad" or "by"?
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 "bad" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "by" - compare definitions side by side with the headword page. Word entry
- This pair ranks #296,131 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "bad" and "by" also get mixed up with nearby pairs, the highest-scored neighbour is "bad vs bane". Nearby pair
Confusion rank #296,131 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.