Thu vs Tsu, What's the Difference?

Which to use

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

#24,339
“Thu” frequency rank: #43,976
“Tsu” frequency rank: 68315
confusion score

Side-by-Side Comparison

Feature	Thu	Tsu
Definition	A surname.	The capital city of Mie Prefecture, Japan.

Letter map: Thu vs Tsu

Shared letters muted; letters that set Thu and Tsu apart highlighted. Shared run: 2.

3 ch

Thu

3 ch

Tsu

Corpus notes: Thu and Tsu

Thu and Tsu are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by a single letter - h in “Thu” becomes s in “Tsu”. Our composite confusion score for this pair is 68315, derived from the frequency rank of both members and their visual similarity.

Thu is recorded at frequency rank #24,339, classified as aname. Tsu is at rank #43,976, tagged as aname.

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 68315, this pair ranks #59,420 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of Thu vs Tsu

Shared letters: tu. Private to "Thu": h. Private to "Tsu": s.

"Thu" · 3 letters · shape CCV · "Tsu" · 3 letters · shape CCV

Frequently Asked Questions

Is swapping "Thu" for "Tsu" ever safe?

No. They differ by a single letter - h in “Thu” becomes s in “Tsu”, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.

Frequency check: "Thu" vs "Tsu" - which ranks higher?

"Thu" is the more common of the two: it sits at frequency rank #24,339 in our English list, against #43,976 for "Tsu". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Done with this confusable. These links stay specific to "Thu" and "Tsu".

Full dictionary entry for "Thu" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "Tsu" - compare definitions side by side with the headword page. Word entry
This pair ranks #59,420 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"Thu" and "Tsu" also get mixed up with nearby pairs, the highest-scored neighbour is "Taf vs Tsu". Nearby pair

Confusion rank #59,420 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.