nãovsnuiWhat's the difference?

Quick tell: não is a adverb, nui is a noun, so they fill different roles in a sentence.

Which to use

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

#41,506
“não” frequency rank
#48,561
“nui” frequency rank
90067
confusion score

Side-by-Side Comparison

Feature não nui
Definition No. Grande

Where the spellings diverge

Shared letters are muted; the letters that actually set não and nui apart are highlighted. They share 1 letter in sequence, which is exactly why the eye skips the difference.

3 ch
não
3 ch
nui

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: não is [nɐ̃w] while nui is [ˈnu.i]. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (adverb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 90067, derived from the frequency rank of both members and their visual similarity.

não is recorded at frequency rank #41,506, classified as anadv, pronounced [nɐ̃w]. nui is at rank #48,561, tagged as anoun, pronounced [ˈnu.i].

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 90067, this pair ranks #2,737 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of não vs nui

Shared letters: n. Private to "não": . Private to "nui": iu.

"não" · 3 letters · shape CVV  ·  "nui" · 3 letters · shape CVV

Frequency comparison

não#41,506
nui#48,561

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "não" and "nui" be used interchangeably?
No - they are not even the same part of speech. "não" is an adverb and "nui" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "não" or "nui"?
"não" is the more common of the two: it sits at frequency rank #41,506 in our Spanish list, against #48,561 for "nui". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering não vs nui

The fastest way to pick the right one every time.

  • Check the role first: if you need an adverb, it's “não”; for a noun, it's “nui”.
  • See each word in full, definition, IPA, etymology and its other confusables. Full “não” entry
  • Browse more pairs most likely to be confused. Most confusable

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

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list