thyvsTsuTell them apart

Quick tell: thy is a determiner, Tsu is a name, so they fill different roles in a sentence.

Which to use

“thy” is a determiner and “Tsu” is a name - they look or sound alike but fill different roles in a sentence.

#6,014
“thy” frequency rank
#43,976
“Tsu” frequency rank
49990
confusion score

Side-by-Side Comparison

Feature thy Tsu
Definition Possessive form of thou: that which belongs to thee; which belongs to you (singular). The capital city of Mie Prefecture, Japan.

Letter map: thy vs Tsu

Shared letters muted; letters that set thy and Tsu apart highlighted. Shared run: 1.

3 ch
thy
3 ch
Tsu

Role in the sentence - thy and Tsu

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: thy is adeterminer and Tsuaname. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 49990, derived from the frequency rank of both members and their visual similarity.

thy is recorded at frequency rank #6,014, classified as adet, pronounced /ðaɪ/. 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 49990, this pair ranks #178,365 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of thy vs Tsu

Shared letters: t. Private to "thy": hy. Private to "Tsu": su.

"thy" · 3 letters · shape CCV  ·  "Tsu" · 3 letters · shape CCV

Frequently Asked Questions

Do "thy" and "Tsu" mean the same thing in a sentence?
No - they are not even the same part of speech. "thy" is a determiner and "Tsu" a name, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "thy" or "Tsu"?
"thy" is the more common of the two: it sits at frequency rank #6,014 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

You've compared "thy" and "Tsu". Here's where to go from here.

  • Full dictionary entry for "thy" 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 #178,365 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "thy" and "Tsu" also get mixed up with nearby pairs, the highest-scored neighbour is "Taf vs Tsu". Nearby pair

Confusion rank #178,365 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