airvsakWhich spelling fits?

Quick tell: air is a adjective, ak is a noun, so they fill different roles in a sentence.

Which to use

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

#6,609
“air” frequency rank
#15,974
“ak” frequency rank
22583
confusion score

Side-by-Side Comparison

Feature air ak
Definition aéreo irmão (que não é o primogênito)

Where the eye mixes air and ak

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

3 ch
air
2 ch
ak

Why the eye confuses air with ak

These two trip readers on the page rather than in the ear: air is /ˈɛɹ/ while ak is /ák̚/. 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 (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 22583, derived from the frequency rank of both members and their visual similarity.

air is recorded at frequency rank #6,609, classified as anadj, pronounced /ˈɛɹ/. ak is at rank #15,974, tagged as anoun, pronounced /ák̚/.

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 22583, this pair ranks #47,431 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of air vs ak

Shared letters: a. Private to "air": ir. Private to "ak": k.

"air" · 3 letters · shape VVC  ·  "ak" · 2 letters · shape VC

Frequently Asked Questions

Do "air" and "ak" mean the same thing in a sentence?
No - they are not even the same part of speech. "air" is an adjective and "ak" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "air" or "ak"?
"air" is the more common of the two: it sits at frequency rank #6,609 in our Portuguese list, against #15,974 for "ak". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "air" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ak" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #47,431 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "air" and "ak" also get mixed up with nearby pairs, the highest-scored neighbour is "acs vs ak". Nearby pair

Confusion rank #47,431 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