Which to use
“nigh” is an adjective and “NIST” is a name - they look or sound alike but fill different roles in a sentence.
- #21,298
- “nigh” frequency rank
- #37,115
- “NIST” frequency rank
- 58413
- confusion score
Side-by-Side Comparison
| Feature | nigh | NIST |
|---|---|---|
| Definition | Near, close by. | Acronym of National Institute of Standards and Technology. |
Letter map: nigh vs NIST
Shared letters muted; letters that set nigh and NIST apart highlighted. Shared run: 2. nigh and NIST follow the identical consonant-vowel pattern (CVCC). Same shape at a glance is often the real trap, independent of shared letters.
Part-of-speech tell for nigh / NIST
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: nigh is anadjective and NISTaname. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 58413, derived from the frequency rank of both members and their visual similarity.
nigh is recorded at frequency rank #21,298, classified as anadj, pronounced /naɪ/. NIST is at rank #37,115, tagged as aname.
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 58413, this pair ranks #112,758 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of nigh vs NIST
Shared letters: in. Private to "nigh": gh. Private to "NIST": st.
"nigh" · 4 letters · shape CVCC · "NIST" · 4 letters · shape CVCC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "nigh" for "NIST" ever safe?
Frequency check: "nigh" vs "NIST" - which ranks higher?
Useful next steps
Done with this confusable. These links stay specific to "nigh" and "NIST".
- Full dictionary entry for "nigh" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "NIST" - compare definitions side by side with the headword page. Word entry
- This pair ranks #112,758 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "nigh" and "NIST" also get mixed up with nearby pairs, the highest-scored neighbour is "NIST vs NPT". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #112,758 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.