dasvsdayConfusable pair

Quick tell: das is a contraction, day is a noun, so they fill different roles in a sentence.

Which to use

“das” is a contraction and “day” is a noun - they look or sound alike but fill different roles in a sentence.

#35
“das” frequency rank
#2,512
“day” frequency rank
2547
confusion score

Side-by-Side Comparison

Feature das day
Definition da preposição de com o artigo definido feminino plural as dia (período de 24 horas)

Where the eye mixes das and day

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

3 ch
das
3 ch
day

Visual trap between das and day

These two trip readers on the page rather than in the ear: das is /dɐs/ while day is /deɪ/. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - s in “das” becomes y in “day”, and the parts of speech differ too (contraction vs noun), which is usually the fastest check. Our composite confusion score for this pair is 2547, derived from the frequency rank of both members and their visual similarity.

das is recorded at frequency rank #35, classified as acontraction, pronounced /dɐs/. day is at rank #2,512, tagged as anoun, pronounced /deɪ/.

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 2547, this pair ranks #72,807 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of das vs day

Shared letters: ad. Private to "das": s. Private to "day": y.

"das" · 3 letters · shape CVC  ·  "day" · 3 letters · shape CVV

Frequently Asked Questions

Is swapping "das" for "day" ever safe?
No - they are not even the same part of speech. "das" is a contraction and "day" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "das" vs "day" - which ranks higher?
"das" is the more common of the two: it sits at frequency rank #35 in our Portuguese list, against #2,512 for "day". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

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 "das" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "day" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #72,807 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "das" and "day" also get mixed up with nearby pairs, the highest-scored neighbour is "dat vs day". Nearby pair

Confusion rank #72,807 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