Which to use
“cu” is a noun and “cum” is a preposition - they look or sound alike but fill different roles in a sentence.
- #4,716
- “cu” frequency rank
- #29,299
- “cum” frequency rank
- 34015
- confusion score
Side-by-Side Comparison
| Feature | cu | cum |
|---|---|---|
| Definition | extremidade do intestino grosso; ânus | usado para indicar algo com duas funções, ou então que tenha se modificado de uma coisa para outra: |
Where the eye mixes cu and cum
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Look-alike desk: cu vs cum
These two trip readers on the page rather than in the ear: cu is /ˈku/ while cum is /kʌm/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 extra letter(s) - “cu” sits inside “cum”, and the parts of speech differ too (noun vs preposition), which is usually the fastest check. Our composite confusion score for this pair is 34015, derived from the frequency rank of both members and their visual similarity.
cu is recorded at frequency rank #4,716, classified as anoun, pronounced /ˈku/. cum is at rank #29,299, tagged as aprep, pronounced /kʌm/.
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 34015, this pair ranks #33,357 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of cu vs cum
Shared letters: cu. Private to "cu": -. Private to "cum": m.
"cu" · 2 letters · shape CV · "cum" · 3 letters · shape CVC
Frequently Asked Questions
Can "cu" and "cum" be used interchangeably?
In ordinary Portuguese text, does "cu" or "cum" show up more?
What to do next
Eye-level mix-up between "cu" and "cum" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "cu" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "cum" - compare definitions side by side with the headword page. Word entry
- This pair ranks #33,357 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "cu" and "cum" also get mixed up with nearby pairs, the highest-scored neighbour is "cham vs cum". Nearby pair
Confusion rank #33,357 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.