hourvshuiTell them apart

Quick tell: hour is a noun, hui is an adverb, so they fill different roles in a sentence.

Which to use

“hour” is a noun and “hui” is an adverb - they look or sound alike but fill different roles in a sentence.

#13,099
“hour” frequency rank
#41,055
“hui” frequency rank
54154
confusion score

Side-by-Side Comparison

Feature hour hui
Definition hora hoje

Letter map: hour vs hui

Shared letters muted; letters that set hour and hui apart highlighted. Shared run: 2.

4 ch
hour
3 ch
hui

Role in the sentence - hour and hui

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: hour is anoun and huianadverb. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 54154, derived from the frequency rank of both members and their visual similarity.

hour is recorded at frequency rank #13,099, classified as anoun, pronounced /aʊr/. hui is at rank #41,055, tagged as anadv.

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 54154, this pair ranks #11,502 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of hour vs hui

Shared letters: hu. Private to "hour": or. Private to "hui": i.

"hour" · 4 letters · shape CVVC  ·  "hui" · 3 letters · shape CVV

Known mistypes of this pair

  • hourhhour · horu · hourr · huor · ohur

Frequently Asked Questions

Do "hour" and "hui" mean the same thing in a sentence?
No - they are not even the same part of speech. "hour" is a noun and "hui" an adverb, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "hour" or "hui" show up more?
"hour" is the more common of the two: it sits at frequency rank #13,099 in our Portuguese list, against #41,055 for "hui". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pair "hour" vs "hui" is on the table, pick a follow-up below.

  • Full dictionary entry for "hour" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "hui" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #11,502 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "hour" and "hui" also get mixed up with nearby pairs, the highest-scored neighbour is "hui vs Hut". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #11,502 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list