ciúmevscumTell them apart

Quick tell: ciúme is a noun, cum is a preposition, so they fill different roles in a sentence.

Which to use

“ciúme” is a noun and “cum” is a preposition - they look or sound alike but fill different roles in a sentence.

#12,626
“ciúme” frequency rank
#29,299
“cum” frequency rank
41925
confusion score

Side-by-Side Comparison

Feature ciúme cum
Definition sentimento causado pelo receio de perder, para outro, o afeto da pessoa amada; zelos usado para indicar algo com duas funções, ou então que tenha se modificado de uma coisa para outra:

Where the eye mixes ciúme and cum

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

5 ch
ciúme
3 ch
cum

Visual trap between ciúme and cum

These two trip readers on the page rather than in the ear: ciúme is /ˈsju.mɨ/ while cum is /kʌm/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (noun vs preposition), which is usually the fastest check. Our composite confusion score for this pair is 41925, derived from the frequency rank of both members and their visual similarity.

ciúme is recorded at frequency rank #12,626, classified as anoun, pronounced /ˈsju.mɨ/. 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 41925, this pair ranks #23,922 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of ciúme vs cum

Shared letters: cm. Private to "ciúme": eiú. Private to "cum": u.

"ciúme" · 5 letters · shape CVVCV  ·  "cum" · 3 letters · shape CVC

Frequently Asked Questions

Is swapping "ciúme" for "cum" ever safe?
No - they are not even the same part of speech. "ciúme" is a noun and "cum" a preposition, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "ciúme" or "cum"?
"ciúme" is the more common of the two: it sits at frequency rank #12,626 in our Portuguese list, against #29,299 for "cum". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "ciúme" 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 #23,922 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "ciúme" and "cum" also get mixed up with nearby pairs, the highest-scored neighbour is "cham vs cum". Nearby pair

Confusion rank #23,922 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