Thi vs to, What's the Difference?

Which to use

“Thi” is a name and “to” is a particle - they look or sound alike but fill different roles in a sentence.

#23,700
“Thi” frequency rank: #2
“to” frequency rank: 23702
confusion score

Side-by-Side Comparison

Feature	Thi	to
Definition	A surname from Vietnamese.	A particle used for marking the following verb as an infinitive.

Letter map: Thi vs to

Shared letters muted; letters that set Thi and to apart highlighted. Shared run: 1.

3 ch

Thi

2 ch

Grammar separator: Thi vs to

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: Thi is aname and toaparticle. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 23702, derived from the frequency rank of both members and their visual similarity.

Thi is recorded at frequency rank #23,700, classified as aname. to is at rank #2, tagged as aparticle, pronounced /tuː/.

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 23702, this pair ranks #407,383 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of Thi vs to

Shared letters: t. Private to "Thi": hi. Private to "to": o.

"Thi" · 3 letters · shape CCV · "to" · 2 letters · shape CV

Frequently Asked Questions

Can "Thi" and "to" be used interchangeably?

No - they are not even the same part of speech. "Thi" is a name and "to" a particle, so a sentence built for one is usually ungrammatical with the other.

Frequency check: "Thi" vs "to" - which ranks higher?

"to" is the more common of the two: it sits at frequency rank #2 in our English list, against #23,700 for "Thi". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

Pair "Thi" vs "to" is on the table, pick a follow-up below.

Full dictionary entry for "Thi" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "to" - compare definitions side by side with the headword page. Word entry
This pair ranks #407,383 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"Thi" and "to" also get mixed up with nearby pairs, the highest-scored neighbour is "Taf vs Thi". Nearby pair

Confusion rank #407,383 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.