damvsduoTell them apart

Which to use

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

#34,654
“dam” frequency rank
#15,317
“duo” frequency rank
49971
confusion score

Side-by-Side Comparison

Feature dam duo
Definition senhora grupo de duas pessoas que atuam conjuntamente

Where the eye mixes dam and duo

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence. dam (CVC) and duo (CVV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

3 ch
dam
3 ch
duo

Visual trap between dam and duo

A purely visual mix-up. dam (/dɑːm/ ouvir^(fonte ?)) and duo ([du.o], Plural: [du.os]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 49971, derived from the frequency rank of both members and their visual similarity.

dam is recorded at frequency rank #34,654, classified as anoun, pronounced /dɑːm/ ouvir^(fonte ?). duo is at rank #15,317, tagged as anoun, pronounced [du.o], Plural: [du.os].

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 49971, this pair ranks #15,000 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of dam vs duo

Shared letters: d. Private to "dam": am. Private to "duo": ou.

"dam" · 3 letters · shape CVC  ·  "duo" · 3 letters · shape CVV

Frequently Asked Questions

Do "dam" and "duo" mean the same thing in a sentence?
No. They are said differently (/dɑːm/ ouvir^(fonte ?) versus [du.o], Plural: [du.os]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "dam" vs "duo" - which ranks higher?
"duo" is the more common of the two: it sits at frequency rank #15,317 in our Portuguese list, against #34,654 for "dam". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "dam" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "duo" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #15,000 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "dam" and "duo" also get mixed up with nearby pairs, the highest-scored neighbour is "dam vs dat". Nearby pair

Confusion rank #15,000 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