navsnumTell them apart

Quick tell: na is a contraction, num is an adverb, so they fill different roles in a sentence.

Which to use

“na” is a contraction and “num” is an adverb - they look or sound alike but fill different roles in a sentence.

#17
“na” frequency rank
#234
“num” frequency rank
251
confusion score

Side-by-Side Comparison

Feature na num
Definition contração da preposição em com o artigo definido a: o mesmo que não

Letter map: na vs num

Shared letters muted; letters that set na and num apart highlighted. Shared run: 1.

2 ch
na
3 ch
num

Part-of-speech tell for na / num

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: na is acontraction and numanadverb. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 251, derived from the frequency rank of both members and their visual similarity.

na is recorded at frequency rank #17, classified as acontraction, pronounced /nɐ/. num is at rank #234, tagged as anadv.

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 251, this pair ranks #75,386 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of na vs num

Shared letters: n. Private to "na": a. Private to "num": mu.

"na" · 2 letters · shape CV  ·  "num" · 3 letters · shape CVC

Frequently Asked Questions

Is swapping "na" for "num" ever safe?
No - they are not even the same part of speech. "na" is a contraction and "num" an adverb, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "na" or "num" show up more?
"na" is the more common of the two: it sits at frequency rank #17 in our Portuguese list, against #234 for "num". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

You've compared "na" and "num". Here's where to go from here.

  • Full dictionary entry for "na" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "num" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #75,386 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "na" and "num" also get mixed up with nearby pairs, the highest-scored neighbour is "nami vs num". Nearby pair

Confusion rank #75,386 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