anvsasnoTell them apart

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

Which to use

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

#2,817
“an” frequency rank
#40,433
“asno” frequency rank
43250
confusion score

Side-by-Side Comparison

Feature an asno
Definition ligado, aceso: burro

Where the eye mixes an and asno

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

2 ch
an
4 ch
asno

Look-alike desk: an vs asno

These two trip readers on the page rather than in the ear: an is /an/ while asno is /ˈaʒ.nu/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (adverb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 43250, derived from the frequency rank of both members and their visual similarity.

an is recorded at frequency rank #2,817, classified as anadv, pronounced /an/. asno is at rank #40,433, tagged as anoun, pronounced /ˈaʒ.nu/.

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 43250, this pair ranks #22,409 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of an vs asno

Shared letters: an. Private to "an": -. Private to "asno": os.

"an" · 2 letters · shape VC  ·  "asno" · 4 letters · shape VCCV

Known mistypes of this pair

  • asnoanso · asnno · ason · assno · sano

Frequently Asked Questions

Is swapping "an" for "asno" ever safe?
No - they are not even the same part of speech. "an" is an adverb and "asno" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "an" or "asno" show up more?
"an" is the more common of the two: it sits at frequency rank #2,817 in our Portuguese list, against #40,433 for "asno". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

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

  • Full dictionary entry for "an" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "asno" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #22,409 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "an" and "asno" also get mixed up with nearby pairs, the highest-scored neighbour is "ASC vs asno". 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 #22,409 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