Which to use
“defy” is a verb and “Duffy” is a name - they look or sound alike but fill different roles in a sentence.
- #16,683
- “defy” frequency rank
- #16,897
- “Duffy” frequency rank
- 33580
- confusion score
Side-by-Side Comparison
| Feature | defy | Duffy |
|---|---|---|
| Definition | To challenge (someone) or brave (a hazard or opposition). | A surname from Irish, an anglicization of Ó Dubhthaigh (“descendant of Dubhthach”). Dubhthach is a byname derived from dubh (“black”). |
Where the eye mixes defy and Duffy
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Look-alike desk: defy vs Duffy
These two trip readers on the page rather than in the ear: defy is /dɪˈfaɪ/ while Duffy is /ˈdʌfi/. 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 (verb vs name), which is usually the fastest check. Our composite confusion score for this pair is 33580, derived from the frequency rank of both members and their visual similarity.
defy is recorded at frequency rank #16,683, classified as averb, pronounced /dɪˈfaɪ/. Duffy is at rank #16,897, tagged as aname, pronounced /ˈdʌfi/.
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 33580, this pair ranks #328,170 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of defy vs Duffy
Shared letters: dfy. Private to "defy": e. Private to "Duffy": u.
"defy" · 4 letters · shape CVCV · "Duffy" · 5 letters · shape CVCCV
Known mistypes of this pair
Frequently Asked Questions
Do "defy" and "Duffy" mean the same thing in a sentence?
In ordinary English text, does "defy" or "Duffy" show up more?
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 "defy" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "Duffy" - compare definitions side by side with the headword page. Word entry
- This pair ranks #328,170 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "defy" and "Duffy" also get mixed up with nearby pairs, the highest-scored neighbour is "defy vs derp". 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 #328,170 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.