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Which to use

“ago” and “an” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#9,434
“ago” frequency rank
#2,817
“an” frequency rank
12251
confusion score

Side-by-Side Comparison

Feature ago an
Definition há, atrás – adj ligado, aceso:

Where the eye mixes ago and an

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch
ago
2 ch
an

Why the eye confuses ago with an

A purely visual mix-up. ago (/əˈɡəʊ/) and an (/an/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 12251, derived from the frequency rank of both members and their visual similarity.

ago is recorded at frequency rank #9,434, classified as anadv, pronounced /əˈɡəʊ/. an is at rank #2,817, tagged as anadv, pronounced /an/.

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 12251, this pair ranks #60,403 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of ago vs an

Shared letters: a. Private to "ago": go. Private to "an": n.

"ago" · 3 letters · shape VCV  ·  "an" · 2 letters · shape VC

Frequently Asked Questions

Do "ago" and "an" mean the same thing in a sentence?
No. They are said differently (/əˈɡəʊ/ versus /an/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "ago" vs "an" - which ranks higher?
"an" is the more common of the two: it sits at frequency rank #2,817 in our Portuguese list, against #9,434 for "ago". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Eye-level mix-up between "ago" and "an" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "ago" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "an" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #60,403 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "ago" and "an" also get mixed up with nearby pairs, the highest-scored neighbour is "acs vs ago". Nearby pair

Confusion rank #60,403 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