semvssetConfusable pair

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

Which to use

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

#69
“sem” frequency rank
#4,348
“set” frequency rank
4417
confusion score

Side-by-Side Comparison

Feature sem set
Definition indicativa de carência ou ausência conjunto

Letter map: sem vs set

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

3 ch
sem
3 ch
set

Part-of-speech tell for sem / set

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: sem is apreposition and setanoun. On the page they differ by a single letter - m in “sem” becomes t in “set”. Our composite confusion score for this pair is 4417, derived from the frequency rank of both members and their visual similarity.

sem is recorded at frequency rank #69, classified as aprep, pronounced /sɐ̃j̃/. set is at rank #4,348, 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 4417, this pair ranks #70,498 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of sem vs set

Shared letters: es. Private to "sem": m. Private to "set": t.

"sem" · 3 letters · shape CVC  ·  "set" · 3 letters · shape CVC

Frequently Asked Questions

Do "sem" and "set" mean the same thing in a sentence?
No - they are not even the same part of speech. "sem" is a preposition and "set" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "sem" or "set" show up more?
"sem" is the more common of the two: it sits at frequency rank #69 in our Portuguese list, against #4,348 for "set". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

You've compared "sem" and "set". Here's where to go from here.

  • Full dictionary entry for "sem" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "set" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #70,498 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "sem" and "set" also get mixed up with nearby pairs, the highest-scored neighbour is "Sau vs set". Nearby pair

Confusion rank #70,498 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