nor vs not, What's the Difference?

Which to use

“nor” is a conjunction and “not” is an adverb - they look or sound alike but fill different roles in a sentence.

#1,732
“nor” frequency rank: #23
“not” frequency rank: 1755
confusion score

Side-by-Side Comparison

Feature	nor	not
Definition	And... not (introducing a negative statement, without necessarily following one).	Negates the meaning of the modified verb.

Where the eye mixes nor and not

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

3 ch

nor

3 ch

not

Visual trap between nor and not

These two trip readers on the page rather than in the ear: nor is /nɔː/ while not is /nɒt/. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - r in “nor” becomes t in “not”, and the parts of speech differ too (conjunction vs adverb), which is usually the fastest check. Our composite confusion score for this pair is 1755, derived from the frequency rank of both members and their visual similarity.

nor is recorded at frequency rank #1,732, classified as aconj, pronounced /nɔː/. not is at rank #23, tagged as anadv, pronounced /nɒt/.

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 1755, this pair ranks #526,736 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of nor vs not

Shared letters: no. Private to "nor": r. Private to "not": t.

"nor" · 3 letters · shape CVC · "not" · 3 letters · shape CVC

Frequently Asked Questions

Do "nor" and "not" mean the same thing in a sentence?

No - they are not even the same part of speech. "nor" is a conjunction and "not" an adverb, so a sentence built for one is usually ungrammatical with the other.

In ordinary English text, does "nor" or "not" show up more?

"not" is the more common of the two: it sits at frequency rank #23 in our English list, against #1,732 for "nor". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

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

Full dictionary entry for "nor" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "not" - compare definitions side by side with the headword page. Word entry
This pair ranks #526,736 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"nor" and "not" also get mixed up with nearby pairs, the highest-scored neighbour is "nor vs NPL". Nearby pair

Confusion rank #526,736 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.