agovsarConfusable pair

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

Which to use

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

#9,434
“ago” frequency rank
#613
“ar” frequency rank
10047
confusion score

Side-by-Side Comparison

Feature ago ar
Definition há, atrás – adj fluido gasoso que envolve todo o planeta Terra; atmosfera

Letter map: ago vs ar

Shared letters muted; letters that set ago and ar apart highlighted. Shared run: 1.

3 ch
ago
2 ch
ar

Role in the sentence - ago and ar

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ago is anadverb and aranoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 10047, 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/. ar is at rank #613, tagged as anoun.

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 10047, this pair ranks #63,177 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of ago vs ar

Shared letters: a. Private to "ago": go. Private to "ar": r.

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

Frequently Asked Questions

Is swapping "ago" for "ar" ever safe?
No - they are not even the same part of speech. "ago" is an adverb and "ar" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "ago" vs "ar" - which ranks higher?
"ar" is the more common of the two: it sits at frequency rank #613 in our Portuguese list, against #9,434 for "ago". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Pair "ago" vs "ar" is on the table, pick a follow-up below.

  • Full dictionary entry for "ago" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ar" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #63,177 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "ago" and "ar" also get mixed up with nearby pairs, the highest-scored neighbour is "acs vs ago". Nearby pair

Confusion rank #63,177 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