Which to use
“hereby” is an adverb and “heresy” is a noun - they look or sound alike but fill different roles in a sentence.
- #12,989
- “hereby” frequency rank
- #18,334
- “heresy” frequency rank
- 31323
- confusion score
Side-by-Side Comparison
| Feature | hereby | heresy |
|---|---|---|
| Definition | Near this place; nearby. | A doctrine held by a member of a religion at variance or conflict with established religious beliefs. |
Where the eye mixes hereby and heresy
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. hereby and heresy follow the identical consonant-vowel pattern (CVCVCV). Same shape at a glance is often the real trap, independent of shared letters.
Visual trap between hereby and heresy
These two trip readers on the page rather than in the ear: hereby is /hɪəˈbʌɪ/ while heresy is /ˈhɛɹəsi/. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - b in “hereby” becomes s in “heresy”, and the parts of speech differ too (adverb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 31323, derived from the frequency rank of both members and their visual similarity.
hereby is recorded at frequency rank #12,989, classified as anadv, pronounced /hɪəˈbʌɪ/. heresy is at rank #18,334, tagged as anoun, pronounced /ˈhɛɹəsi/.
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 31323, this pair ranks #347,092 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of hereby vs heresy
Shared letters: ehry. Private to "hereby": b. Private to "heresy": s.
"hereby" · 6 letters · shape CVCVCV · "heresy" · 6 letters · shape CVCVCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "hereby" for "heresy" ever safe?
In ordinary English text, does "hereby" or "heresy" show up more?
Useful next steps
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "hereby" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "heresy" - compare definitions side by side with the headword page. Word entry
- This pair ranks #347,092 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "hereby" and "heresy" also get mixed up with nearby pairs, the highest-scored neighbour is "hereof vs heresy". 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 #347,092 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.