navsnãoWhat's the difference?

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

Which to use

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

#17
“na” frequency rank
#11
“não” frequency rank
28
confusion score

Side-by-Side Comparison

Feature na não
Definition contração da preposição em com o artigo definido a: usado para negar verbos e adjetivos

Where the eye mixes na and não

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

2 ch
na
3 ch
não

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: na is /nɐ/ while não is /ˈnɐ̃w̃/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (contraction vs adverb), which is usually the fastest check. Our composite confusion score for this pair is 28, derived from the frequency rank of both members and their visual similarity.

na is recorded at frequency rank #17, classified as acontraction, pronounced /nɐ/. não is at rank #11, tagged as anadv, pronounced /ˈnɐ̃w̃/.

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 28, this pair ranks #75,619 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of na vs não

Shared letters: n. Private to "na": a. Private to "não": .

"na" · 2 letters · shape CV  ·  "não" · 3 letters · shape CVV

Frequently Asked Questions

Can "na" and "não" be used interchangeably?
No - they are not even the same part of speech. "na" is a contraction and "não" an adverb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "na" or "não"?
"não" is the more common of the two: it sits at frequency rank #11 in our Portuguese list, against #17 for "na". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list