TBvsthuWhich spelling fits?

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

Which to use

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

#28,773
“TB” frequency rank
#48,228
“thu” frequency rank
77001
confusion score

Side-by-Side Comparison

Feature TB thu
Definition Très bien. Forme mutée de tu par spirantisation.

Where the eye mixes TB and thu

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

2 ch
TB
3 ch
thu

Look-alike desk: TB vs thu

These two trip readers on the page rather than in the ear: TB is \te.be\ while thu is \θɨː\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 77001, derived from the frequency rank of both members and their visual similarity.

TB is recorded at frequency rank #28,773, classified as anadj, pronounced \te.be\. 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 77001, this pair ranks #29,559 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of TB vs thu

Shared letters: t. Private to "TB": b. Private to "thu": hu.

"TB" · 2 letters · shape CC  ·  "thu" · 3 letters · shape CCV

Frequently Asked Questions

Do "TB" and "thu" mean the same thing in a sentence?
No - they are not even the same part of speech. "TB" is an adjective and "thu" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "TB" vs "thu" - which ranks higher?
"TB" is the more common of the two: it sits at frequency rank #28,773 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

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "TB" 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 #29,559 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "TB" and "thu" also get mixed up with nearby pairs, the highest-scored neighbour is "thu vs tif". Nearby pair

Confusion rank #29,559 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