naphtha
/ˈnæfθə/
"naphtha" is a 7-letter English headword indexed on PlainSpell.
The verdict
“naphtha” is uncommon English (frequency #81,620 among 1,534 “N” headwords), classed as a noun. The kind of spelling people second-guess.
- #81,620
- frequency rank, English
- 1,534
- “N” headwords
According to Wiktionary data (CC BY-SA, analyzed September 2, 2026) - Naturally occurring liquid petroleum.
Corpus desk
Index EN-naphtha · naphtha · English
naphtha · rank #81,620 · 0 variants · 0 confusables
- FREQ-RARE #81,620
- LEN-LONG 7 letters
- VOW-2 2 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 1,534
- PHOTO-FINISH naltrexone
Nearest frequency peer: naltrexone (-2 rank slots)
Read with this headword: Spelling guide for this pattern
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
Frequency neighbourhood for “naphtha”
Lower corpus rank = more everyday usage (inverted bar length for readability)
- Nahuatl
Nahuatl
18,384 corpus weight
- naltrexone
naltrexone
18,383 corpus weight
- naphtha
naphtha
18,381 corpus weight
- neurologica…
neurologically
18,376 corpus weight
- newsgroup
newsgroup
18,375 corpus weight
- Newtownards
Newtownards
18,374 corpus weight
What this shows Bars show where “naphtha” sits against the nearest ranked English headwords in the FrequencyWords band, not a reprint of letter-browse containment.
| Property | Value |
|---|---|
| Headword | naphtha |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈnæfθə/ |
| Letters | 7 |
| Frequency rank | #81,620 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “naphtha” sits in English frequency
Rare enough to double-check
naphtha is uncommon English at frequency #81,620 among 1,534 “N” headwords, classed as anoun, transcribed /ˈnæfθə/. Rarity is why readers land here mid-draft. 2 senses are on record.
No misspelling variants are generated for naphtha in our index, since its letter sequence doesn't invite the usual edit-distance slips. Our dataset records no confusable match here, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.
Etymologically, the entry records: Etymology tree Akkadian napṭumbor.? Old Persian *naftahbor. Ancient Greek νάφθα (náphtha)bor. Latin naphthabor. English naphtha From Latin naphtha, from Ancient Greek νάφθα (náphtha, “naphtha”), from Old Persian *naftah, probably borrowed or assimilated fro… The correct English form is naphtha, spelled N-A-P-H-T-H-A.
Definition
- 1Naturally occurring liquid petroleum.
- 2Any of a wide variety of aliphatic or aromatic liquid hydrocarbon mixtures distilled from petroleum or coal tar, especially as used in solvents or petrol.
Recorded use
Wiktionary examplesThese source excerpts show how naphtha appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
The turmoil went on—no rest, no peace. […] It was nearly eleven o'clock now, and he strolled out again. In the little fair created by the costers' barrows the evening only seemed beginning; and the naphtha flares made one's eyes ache, the men's voices grated harshly, and the girls' faces saddened one.
No, this is not a disentanglement from, but a progressive knotting into — they go in under archways, secret entrances of rotted concrete that only looked like loops of an underpass... certain trestles of blackened wood have moved slowly by overhead, and the smells begun of coal from days far to the past, smells of naphtha winters, of Sundays when no traff…
Etymology
Etymology tree Akkadian napṭumbor.? Old Persian *naftahbor. Ancient Greek νάφθα (náphtha)bor. Latin naphthabor. English naphtha From Latin naphtha, from Ancient Greek νάφθα (náphtha, “naphtha”), from Old Persian *naftah, probably borrowed or assimilated from Akkadian 𒉌𒆳𒊏 (napṭu, “naphtha”) . The Greek mediation is reflected in the spelling – ‘ph’ and ‘th’ (from ‘φ’ and ‘θ’).
This word in other languages
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.
PlainSpell is rendered directly from structured Wiktionary extracts and open word-frequency lists, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of September 2, 2026. Primary sources: Wiktionary (via kaikki.org) and FrequencyWords.
Frequently Asked Questions
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "naphtha", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 7 letters (nearest by frequency rank).
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.