tarpvstauWhich spelling fits?

Which to use

“tarp” and “tau” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#29,858
“tarp” frequency rank
#19,983
“tau” frequency rank
49841
confusion score

Side-by-Side Comparison

Feature tarp tau
Definition Clipping of tarpaulin (“covering”). The letter Τ /τ in the Greek alphabet; being the nineteenth letter of the Classical and Modern Greek, and the twenty-first letter of the Old and Ancient Greek alphabets.

Where the eye mixes tarp and tau

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. tarp runs 4 letters (CVCC) against tau's 3 (CVV) - the length gap alone is often enough to separate them once you know to check it.

4 ch
tarp
3 ch
tau

Why the eye confuses tarp with tau

A purely visual mix-up. tarp (/tɑːp/) and tau (/taʊ/) 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 49841, derived from the frequency rank of both members and their visual similarity.

tarp is recorded at frequency rank #29,858, classified as anoun, pronounced /tɑːp/. tau is at rank #19,983, tagged as anoun, pronounced /taʊ/.

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 49841, this pair ranks #179,789 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of tarp vs tau

Shared letters: at. Private to "tarp": pr. Private to "tau": u.

"tarp" · 4 letters · shape CVCC  ·  "tau" · 3 letters · shape CVV

Known mistypes of this pair

  • tarp ← atrp · tapr · tarpp · tarrp · ttarp

Frequently Asked Questions

Is swapping "tarp" for "tau" ever safe?
No. They are said differently (/tɑːp/ versus /taʊ/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary English text, does "tarp" or "tau" show up more?
"tau" is the more common of the two: it sits at frequency rank #19,983 in our English list, against #29,858 for "tarp". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Eye-level mix-up between "tarp" and "tau" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "tarp" 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 #179,789 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "tarp" and "tau" also get mixed up with nearby pairs, the highest-scored neighbour is "Taf vs tarp". 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 #179,789 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