tanvsthuWhich spelling fits?

Quick tell: tan is a symbol, thu is a noun, so they fill different roles in a sentence.

Which to use

“tan” is a symbol and “thu” is a noun - they look or sound alike but fill different roles in a sentence.

#16,493
“tan” frequency rank
#48,228
“thu” frequency rank
64721
confusion score

Side-by-Side Comparison

Feature tan thu
Definition Tangente. Forme mutée de tu par spirantisation.

Letter map: tan vs thu

Shared letters muted; letters that set tan and thu apart highlighted. Shared run: 1.

3 ch
tan
3 ch
thu

Part-of-speech tell for tan / thu

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: tan is asymbol and thuanoun. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 64721, derived from the frequency rank of both members and their visual similarity.

tan is recorded at frequency rank #16,493, classified as asymbol. thu is at rank #48,228, tagged as anoun, pronounced \θɨː\.

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 64721, this pair ranks #75,668 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of tan vs thu

Shared letters: t. Private to "tan": an. Private to "thu": hu.

"tan" · 3 letters · shape CVC  ·  "thu" · 3 letters · shape CCV

Frequently Asked Questions

Do "tan" and "thu" mean the same thing in a sentence?
No - they are not even the same part of speech. "tan" is a symbol and "thu" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "tan" vs "thu" - which ranks higher?
"tan" is the more common of the two: it sits at frequency rank #16,493 in our French list, against #48,228 for "thu". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Done with this confusable. These links stay specific to "tan" and "thu".

  • Full dictionary entry for "tan" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "thu" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #75,668 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "tan" and "thu" also get mixed up with nearby pairs, the highest-scored neighbour is "thu vs tif". Nearby pair

Confusion rank #75,668 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list