Which to use
“tested” and “treated” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #3,144
- “tested” frequency rank
- #2,022
- “treated” frequency rank
- 5166
- confusion score
Side-by-Side Comparison
| Feature | tested | treated |
|---|---|---|
| Definition | simple past and past participle of test | simple past and past participle of treat |
Where the eye mixes tested and treated
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.
Visual trap between tested and treated
A purely visual mix-up. tested (/ˈtɛstɪd/) and treated (/ˈtɹiːtɪd/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 5166, derived from the frequency rank of both members and their visual similarity.
tested is recorded at frequency rank #3,144, classified as averb, pronounced /ˈtɛstɪd/. treated is at rank #2,022, tagged as averb, pronounced /ˈtɹiːtɪd/.
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 5166, this pair ranks #516,350 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of tested vs treated
Shared letters: det. Private to "tested": s. Private to "treated": ar.
"tested" · 6 letters · shape CVCCVC · "treated" · 7 letters · shape CCVVCVC
Known mistypes of this pair
Frequently Asked Questions
Can "tested" and "treated" be used interchangeably?
Which is more common, "tested" or "treated"?
What to do next
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "tested" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "treated" - compare definitions side by side with the headword page. Word entry
- This pair ranks #516,350 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "tested" and "treated" also get mixed up with nearby pairs, the highest-scored neighbour is "teared vs tested". 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 #516,350 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.