ThuvstooWhat's the difference?

Quick tell: Thu is a name, too is an adverb, so they fill different roles in a sentence.

Which to use

“Thu” is a name and “too” is an adverb - they look or sound alike but fill different roles in a sentence.

#24,339
“Thu” frequency rank
#121
“too” frequency rank
24460
confusion score

Side-by-Side Comparison

Feature Thu too
Definition A surname. Likewise.

Letter map: Thu vs too

Shared letters muted; letters that set Thu and too apart highlighted. Shared run: 1.

3 ch
Thu
3 ch
too

Role in the sentence - Thu and too

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: Thu is aname and tooanadverb. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 24460, derived from the frequency rank of both members and their visual similarity.

Thu is recorded at frequency rank #24,339, classified as aname. too is at rank #121, tagged as anadv, 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 24460, this pair ranks #401,785 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of Thu vs too

Shared letters: t. Private to "Thu": hu. Private to "too": o.

"Thu" · 3 letters · shape CCV  ·  "too" · 3 letters · shape CVV

Frequently Asked Questions

Do "Thu" and "too" mean the same thing in a sentence?
No - they are not even the same part of speech. "Thu" is a name and "too" an adverb, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "Thu" or "too" show up more?
"too" is the more common of the two: it sits at frequency rank #121 in our English list, against #24,339 for "Thu". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

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

  • Full dictionary entry for "Thu" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "too" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #401,785 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "Thu" and "too" also get mixed up with nearby pairs, the highest-scored neighbour is "Taf vs Thu". Nearby pair

Confusion rank #401,785 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