detectvsdetectedWhat's the difference?

Quick tell: detect is a verb, detected is an adjective, so they fill different roles in a sentence.

Which to use

“detect” is a verb and “detected” is an adjective - they look or sound alike but fill different roles in a sentence.

#6,557
“detect” frequency rank
#6,460
“detected” frequency rank
13017
confusion score

Side-by-Side Comparison

Feature detect detected
Definition To discover or find by careful search, examination, or probing. Having been noticed.

Where the eye mixes detect and detected

Muted = shared; highlighted = the visual trap. They share 6 letters in sequence.

6 ch
detect
8 ch
detected

Why the eye confuses detect with detected

These two trip readers on the page rather than in the ear: detect is /dɪˈtɛkt/ while detected is /dɪˈtɛktɪd/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “detect” sits inside “detected”, and the parts of speech differ too (verb vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 13017, derived from the frequency rank of both members and their visual similarity.

detect is recorded at frequency rank #6,557, classified as averb, pronounced /dɪˈtɛkt/. detected is at rank #6,460, tagged as anadj, pronounced /dɪˈtɛktɪd/.

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 13017, this pair ranks #478,208 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of detect vs detected

Shared letters: cdet. Private to "detect": -. Private to "detected": -.

"detect" · 6 letters · shape CVCVCC  ·  "detected" · 8 letters · shape CVCVCCVC

Known mistypes of this pair

  • detectddetect · deetct · detcet · detecct · detectt · detetc · dettect · dteect
  • detectedddetected · deetcted · detceted · deteccted · detecetd · detectde · detectedd · detectted

Frequently Asked Questions

Can "detect" and "detected" be used interchangeably?
No - they are not even the same part of speech. "detect" is a verb and "detected" an adjective, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "detect" vs "detected" - which ranks higher?
"detected" is the more common of the two: it sits at frequency rank #6,460 in our English list, against #6,557 for "detect". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "detect" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "detected" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #478,208 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "detect" and "detected" also get mixed up with nearby pairs, the highest-scored neighbour is "dejected vs detected". 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 #478,208 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list