dom vs dos, What's the Difference?

Which to use

“dom” is a noun and “dos” is a num - they look or sound alike but fill different roles in a sentence.

#1,921
“dom” frequency rank: #24
“dos” frequency rank: 1945
confusion score

Side-by-Side Comparison

Feature	dom	dos
Definition	casa (construção que serve de moradia)	o número dois

Where the eye mixes dom and dos

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

3 ch

dom

3 ch

dos

Look-alike desk: dom vs dos

These two trip readers on the page rather than in the ear: dom is /dɔm/ while dos is /dɔs/. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - m in “dom” becomes s in “dos”, and the parts of speech differ too (noun vs num), which is usually the fastest check. Our composite confusion score for this pair is 1945, derived from the frequency rank of both members and their visual similarity.

dom is recorded at frequency rank #1,921, classified as anoun, pronounced /dɔm/. dos is at rank #24, tagged as anum, pronounced /dɔs/.

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 1945, this pair ranks #73,576 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of dom vs dos

Shared letters: do. Private to "dom": m. Private to "dos": s.

"dom" · 3 letters · shape CVC · "dos" · 3 letters · shape CVC

Frequently Asked Questions

Can "dom" and "dos" be used interchangeably?

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

Which is more common, "dom" or "dos"?

"dos" is the more common of the two: it sits at frequency rank #24 in our Portuguese list, against #1,921 for "dom". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

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

Full dictionary entry for "dom" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "dos" - compare definitions side by side with the headword page. Word entry
This pair ranks #73,576 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"dom" and "dos" also get mixed up with nearby pairs, the highest-scored neighbour is "dat vs dom". Nearby pair

Confusion rank #73,576 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.