do vs dor, What's the Difference?

Which to use

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

#6
“do” frequency rank: #934
“dor” frequency rank: 940
confusion score

Side-by-Side Comparison

Feature	do	dor
Definition	contração da preposição de com o artigo definido o	sensação desagradável:

Letter map: do vs dor

Shared letters muted; letters that set do and dor apart highlighted. Shared run: 2.

2 ch

3 ch

dor

Grammar separator: do vs dor

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: do is acontraction and doranoun. On the page they differ by 1 extra letter(s) - “do” sits inside “dor”. Our composite confusion score for this pair is 940, derived from the frequency rank of both members and their visual similarity.

do is recorded at frequency rank #6, classified as acontraction, pronounced /du/ (/do/, se enfático). dor is at rank #934, tagged as anoun.

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 940, this pair ranks #74,690 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of do vs dor

Shared letters: do. Private to "do": -. Private to "dor": r.

"do" · 2 letters · shape CV · "dor" · 3 letters · shape CVC

Frequently Asked Questions

Can "do" and "dor" be used interchangeably?

No - they are not even the same part of speech. "do" is a contraction and "dor" a noun, so a sentence built for one is usually ungrammatical with the other.

Frequency check: "do" vs "dor" - which ranks higher?

"do" is the more common of the two: it sits at frequency rank #6 in our Portuguese list, against #934 for "dor". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

Done with this confusable. These links stay specific to "do" and "dor".

Full dictionary entry for "do" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "dor" - compare definitions side by side with the headword page. Word entry
This pair ranks #74,690 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"do" and "dor" also get mixed up with nearby pairs, the highest-scored neighbour is "dat vs dor". Nearby pair

Confusion rank #74,690 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.