Which to use
“defective” is an adjective and “detective” is a noun - they look or sound alike but fill different roles in a sentence.
- #13,494
- “defective” frequency rank
- #5,025
- “detective” frequency rank
- 18519
- confusion score
Side-by-Side Comparison
| Feature | defective | detective |
|---|---|---|
| Definition | Having one or more defects. | A police officer tasked with collecting evidence and information in order to solve a crime; an investigator. |
Where the eye mixes defective and detective
Muted = shared; highlighted = the visual trap. They share 8 letters in sequence. defective and detective follow the identical consonant-vowel pattern (CVCVCCVCV). Same shape at a glance is often the real trap, independent of shared letters.
Visual trap between defective and detective
These two trip readers on the page rather than in the ear: defective is /dɪˈfɛktɪv/ while detective is /dɪˈtɛktɪv/. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - f in “defective” becomes t in “detective”, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 18519, derived from the frequency rank of both members and their visual similarity.
defective is recorded at frequency rank #13,494, classified as anadj, pronounced /dɪˈfɛktɪv/. detective is at rank #5,025, tagged as anoun, pronounced /dɪˈtɛktɪv/.
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 18519, this pair ranks #444,339 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of defective vs detective
Shared letters: cdeitv. Private to "defective": f. Private to "detective": -.
"defective" · 9 letters · shape CVCVCCVCV · "detective" · 9 letters · shape CVCVCCVCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "defective" for "detective" ever safe?
Which is more common, "defective" or "detective"?
Useful next steps
Eye-level mix-up between "defective" and "detective" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "defective" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "detective" - compare definitions side by side with the headword page. Word entry
- This pair ranks #444,339 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "defective" and "detective" also get mixed up with nearby pairs, the highest-scored neighbour is "deductive vs defective". 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 #444,339 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.