UTIvsútilWhich spelling fits?

Quick tell: UTI is a abbrev, útil is an adjective, so they fill different roles in a sentence.

Which to use

“UTI” is an abbrev and “útil” is an adjective - they look or sound alike but fill different roles in a sentence.

#14,489
“UTI” frequency rank
#2,549
“útil” frequency rank
17038
confusion score

Side-by-Side Comparison

Feature UTI útil
Definition Unidade de Terapia Intensiva que pode ter ou tem algum uso ou é necessário:

Where the eye mixes UTI and útil

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

3 ch
UTI
4 ch
útil

Visual trap between UTI and útil

These two trip readers on the page rather than in the ear: UTI is /u.te.ˈi/ while útil is [ˈu.tʃiw]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (abbrev vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 17038, derived from the frequency rank of both members and their visual similarity.

UTI is recorded at frequency rank #14,489, classified as anabbrev, pronounced /u.te.ˈi/. útil is at rank #2,549, tagged as anadj, pronounced [ˈu.tʃiw].

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 17038, this pair ranks #54,315 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of UTI vs útil

Shared letters: it. Private to "UTI": u. Private to "útil": .

"UTI" · 3 letters · shape VCV  ·  "útil" · 4 letters · shape VCVC

Frequently Asked Questions

Can "UTI" and "útil" be used interchangeably?
No - they are not even the same part of speech. "UTI" is an abbrev and "útil" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "UTI" or "útil"?
"útil" is the more common of the two: it sits at frequency rank #2,549 in our Portuguese list, against #14,489 for "UTI". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "UTI" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "útil" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #54,315 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "UTI" and "útil" also get mixed up with nearby pairs, the highest-scored neighbour is "ú vs UTI". Nearby pair

Confusion rank #54,315 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