Which to use
“sensei” and “sensor” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #25,570
- “sensei” frequency rank
- #8,089
- “sensor” frequency rank
- 33659
- confusion score
Side-by-Side Comparison
| Feature | sensei | sensor |
|---|---|---|
| Definition | A martial arts instructor; especially one for a Japanese martial art. | A device or organ that detects certain external stimuli and responds in a distinctive manner. |
Where the eye mixes sensei and sensor
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.
Why the eye confuses sensei with sensor
A purely visual mix-up. sensei (/ˈsɛnseɪ/) and sensor (/ˈsɛn.sə/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 33659, derived from the frequency rank of both members and their visual similarity.
sensei is recorded at frequency rank #25,570, classified as anoun, pronounced /ˈsɛnseɪ/. sensor is at rank #8,089, tagged as anoun, pronounced /ˈsɛn.sə/.
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 33659, this pair ranks #327,504 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of sensei vs sensor
Shared letters: ens. Private to "sensei": i. Private to "sensor": or.
"sensei" · 6 letters · shape CVCCVV · "sensor" · 6 letters · shape CVCCVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "sensei" for "sensor" ever safe?
Frequency check: "sensei" vs "sensor" - which ranks higher?
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 "sensei" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sensor" - compare definitions side by side with the headword page. Word entry
- This pair ranks #327,504 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "sensei" and "sensor" also get mixed up with nearby pairs, the highest-scored neighbour is "sensei vs Spenser". 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 #327,504 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.