not vs nu, What's the Difference?

Which to use

“not” is an adverb and “nu” is an adjective - they look or sound alike but fill different roles in a sentence.

#6,708
“not” frequency rank: #15,177
“nu” frequency rank: 21885
confusion score

Side-by-Side Comparison

Feature	not	nu
Definition	No.	Desnudo.

Where the eye mixes not and nu

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

3 ch

not

2 ch

Visual trap between not and nu

These two trip readers on the page rather than in the ear: not is /nɒt/ while nu is [ny]. 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 (adverb vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 21885, derived from the frequency rank of both members and their visual similarity.

not is recorded at frequency rank #6,708, classified as anadv, pronounced /nɒt/. nu is at rank #15,177, tagged as anadj, pronounced [ny].

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 21885, this pair ranks #252,895 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of not vs nu

Shared letters: n. Private to "not": ot. Private to "nu": u.

"not" · 3 letters · shape CVC · "nu" · 2 letters · shape CV

Frequently Asked Questions

Do "not" and "nu" mean the same thing in a sentence?

No - they are not even the same part of speech. "not" is an adverb and "nu" an adjective, so a sentence built for one is usually ungrammatical with the other.

In ordinary Spanish text, does "not" or "nu" show up more?

"not" is the more common of the two: it sits at frequency rank #6,708 in our Spanish list, against #15,177 for "nu". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

Full dictionary entry for "not" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "nu" - compare definitions side by side with the headword page. Word entry
This pair ranks #252,895 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
"not" and "nu" also get mixed up with nearby pairs, the highest-scored neighbour is "nox vs nu". Nearby pair

Confusion rank #252,895 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.