decênciavsdemênciaWhat's the difference?

Which to use

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

#17,478
“decência” frequency rank
#18,023
“demência” frequency rank
35501
confusion score

Side-by-Side Comparison

Feature decência demência
Definition qualidade daquele ou daquilo que é decente degeneração progressiva das faculdades mentais

Where the eye mixes decência and demência

Muted = shared; highlighted = the visual trap. They share 7 letters in sequence. decência and demência follow the identical consonant-vowel pattern (CVCVCCVV). Same shape at a glance is often the real trap, independent of shared letters.

8 ch
decência
8 ch
demência

Visual trap between decência and demência

A purely visual mix-up. decência (/dɨ.ˈsẽ.sjɐ/) and demência (/dɨ.ˈmẽ.sjɐ/) 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 a single letter - c in “decência” becomes m in “demência”. Our composite confusion score for this pair is 35501, derived from the frequency rank of both members and their visual similarity.

decência is recorded at frequency rank #17,478, classified as anoun, pronounced /dɨ.ˈsẽ.sjɐ/. demência is at rank #18,023, tagged as anoun, pronounced /dɨ.ˈmẽ.sjɐ/.

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 35501, this pair ranks #31,549 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of decência vs demência

Shared letters: acdeinê. Private to "decência": -. Private to "demência": m.

"decência" · 8 letters · shape CVCVCCVV  ·  "demência" · 8 letters · shape CVCVCCVV

Frequently Asked Questions

Is swapping "decência" for "demência" ever safe?
No. They are said differently (/dɨ.ˈsẽ.sjɐ/ versus /dɨ.ˈmẽ.sjɐ/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "decência" or "demência"?
"decência" is the more common of the two: it sits at frequency rank #17,478 in our Portuguese list, against #18,023 for "demência". 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 "decência" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "demência" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #31,549 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "decência" and "demência" also get mixed up with nearby pairs, the highest-scored neighbour is "decadência vs decência". Nearby pair

Confusion rank #31,549 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