Which to use
“not” is an adverb and “nun” is a noun - they look or sound alike but fill different roles in a sentence.
- #23
- “not” frequency rank
- #12,289
- “nun” frequency rank
- 12312
- confusion score
Side-by-Side Comparison
| Feature | not | nun |
|---|---|---|
| Definition | Negates the meaning of the modified verb. | A member of a Christian religious community of women who live by certain vows and usually wear a habit, (Roman Catholicism, specifically) those living together in a cloister. |
Where the eye mixes not and nun
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Look-alike desk: not vs nun
These two trip readers on the page rather than in the ear: not is /nɒt/ while nun is /nʌn/. 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 12312, derived from the frequency rank of both members and their visual similarity.
not is recorded at frequency rank #23, classified as anadv, pronounced /nɒt/. nun is at rank #12,289, tagged as anoun, pronounced /nʌn/.
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 12312, this pair ranks #482,268 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of not vs nun
Shared letters: n. Private to "not": ot. Private to "nun": u.
"not" · 3 letters · shape CVC · "nun" · 3 letters · shape CVC
Frequently Asked Questions
Can "not" and "nun" be used interchangeably?
In ordinary English text, does "not" or "nun" show up more?
Useful next steps
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 "nun" - compare definitions side by side with the headword page. Word entry
- This pair ranks #482,268 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "not" and "nun" also get mixed up with nearby pairs, the highest-scored neighbour is "NPL vs nun". Nearby pair
Confusion rank #482,268 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.