tamvstauWhich spelling fits?

Quick tell: tam is a adverb, tau is a noun, so they fill different roles in a sentence.

Which to use

“tam” is an adverb and “tau” is a noun - they look or sound alike but fill different roles in a sentence.

#12,345
“tam” frequency rank
#32,397
“tau” frequency rank
44742
confusion score

Side-by-Side Comparison

Feature tam tau
Definition lá, aí, ali, acolá nome da décima nona letra do alfabeto grego (Τ/τ)

Letter map: tam vs tau

Shared letters muted; letters that set tam and tau apart highlighted. Shared run: 2.

3 ch
tam
3 ch
tau

Role in the sentence - tam and tau

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: tam is anadverb and tauanoun. On the page they differ by a single letter - m in “tam” becomes u in “tau”. Our composite confusion score for this pair is 44742, derived from the frequency rank of both members and their visual similarity.

tam is recorded at frequency rank #12,345, classified as anadv. tau is at rank #32,397, tagged as anoun, pronounced /taw/.

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 44742, this pair ranks #20,687 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of tam vs tau

Shared letters: at. Private to "tam": m. Private to "tau": u.

"tam" · 3 letters · shape CVC  ·  "tau" · 3 letters · shape CVV

Frequently Asked Questions

Is swapping "tam" for "tau" ever safe?
No - they are not even the same part of speech. "tam" is an adverb and "tau" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "tam" or "tau"?
"tam" is the more common of the two: it sits at frequency rank #12,345 in our Portuguese list, against #32,397 for "tau". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

You've compared "tam" and "tau". Here's where to go from here.

  • Full dictionary entry for "tam" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "tau" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #20,687 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "tam" and "tau" also get mixed up with nearby pairs, the highest-scored neighbour is "tau vs til". Nearby pair

Confusion rank #20,687 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list