Which to use
“tau” is a noun and “teu” is a pronoun - they look or sound alike but fill different roles in a sentence.
- #32,397
- “tau” frequency rank
- #592
- “teu” frequency rank
- 32989
- confusion score
Side-by-Side Comparison
| Feature | tau | teu |
|---|---|---|
| Definition | nome da décima nona letra do alfabeto grego (Τ/τ) | de posse da segunda pessoa do singular (tu) |
Where the eye mixes tau and teu
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Why the eye confuses tau with teu
These two trip readers on the page rather than in the ear: tau is /taw/ while teu is /ˈtew/. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - a in “tau” becomes e in “teu”, and the parts of speech differ too (noun vs pronoun), which is usually the fastest check. Our composite confusion score for this pair is 32989, derived from the frequency rank of both members and their visual similarity.
tau is recorded at frequency rank #32,397, classified as anoun, pronounced /taw/. teu is at rank #592, tagged as apron, pronounced /ˈtew/.
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 32989, this pair ranks #34,647 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of tau vs teu
Shared letters: tu. Private to "tau": a. Private to "teu": e.
"tau" · 3 letters · shape CVV · "teu" · 3 letters · shape CVV
Frequently Asked Questions
Is swapping "tau" for "teu" ever safe?
In ordinary Portuguese text, does "tau" or "teu" show up more?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "tau" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "teu" - compare definitions side by side with the headword page. Word entry
- This pair ranks #34,647 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "tau" and "teu" also get mixed up with nearby pairs, the highest-scored neighbour is "tau vs til". Nearby pair
Confusion rank #34,647 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.