ardorvsaroWhich spelling fits?

Which to use

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

#36,748
“ardor” frequency rank
#22,868
“aro” frequency rank
59616
confusion score

Side-by-Side Comparison

Feature ardor aro
Definition calor intenso caixilho de madeira para os vãos das portas e janelas

Where the eye mixes ardor and aro

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

5 ch
ardor
3 ch
aro

Why the eye confuses ardor with aro

A purely visual mix-up. ardor (/ɐɾ.ˈdoɾ/) and aro (/ˈa.ɾu/) 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 2 letter(s) in length. Our composite confusion score for this pair is 59616, derived from the frequency rank of both members and their visual similarity.

ardor is recorded at frequency rank #36,748, classified as anoun, pronounced /ɐɾ.ˈdoɾ/. aro is at rank #22,868, tagged as anoun, pronounced /ˈa.ɾu/.

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 59616, this pair ranks #8,090 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of ardor vs aro

Shared letters: aor. Private to "ardor": d. Private to "aro": -.

"ardor" · 5 letters · shape VCCVC  ·  "aro" · 3 letters · shape VCV

Known mistypes of this pair

  • ardoradror · arddor · ardorr · ardro · arodr · arrdor · rador

Frequently Asked Questions

Can "ardor" and "aro" be used interchangeably?
No. They are said differently (/ɐɾ.ˈdoɾ/ versus /ˈa.ɾu/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "ardor" or "aro"?
"aro" is the more common of the two: it sits at frequency rank #22,868 in our Portuguese list, against #36,748 for "ardor". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "ardor" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "aro" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #8,090 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "ardor" and "aro" also get mixed up with nearby pairs, the highest-scored neighbour is "arar vs ardor". 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 #8,090 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