NEPA
"nepa" is a 4-letter English headword indexed on PlainSpell.
The verdict
“NEPA” is uncommon English (frequency #52,516 among 1,534 “N” headwords), classed as a proper noun. The kind of spelling people second-guess.
- #52,516
- frequency rank, English
- 1,534
- “N” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Initialism of National Environmental Policy Act.
Corpus desk
Index EN-nepa · NEPA · English
NEPA · rank #52,516 · 0 variants · 0 confusables
- FREQ-RARE #52,516
- LEN-MID 4 letters
- VOW-2 2 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 1,534
- PHOTO-FINISH neocon
Nearest frequency peer: neocon (-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.
Long-tail ranks near “NEPA”
Sparse band: bars invert rank so rarer forms read shorter
- myelin
myelin
47,489 corpus weight
- neocon
neocon
47,487 corpus weight
- NEPA
NEPA
47,485 corpus weight
- niacin
niacin
47,482 corpus weight
- Nickerson
Nickerson
47,481 corpus weight
- nigra
nigra
47,480 corpus weight
What this shows Long-tail view: where “NEPA” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | NEPA |
| Language | English |
| Part of speech | Proper noun |
| Letters | 4 |
| Frequency rank | #52,516 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “NEPA” in English
Rare enough to double-check
NEPA is uncommon English at frequency #52,516 among 1,534 “N” headwords, classed as aproper noun. Rarity is why readers land here mid-draft. Gloss: "Initialism of National Environmental Policy Act.".
Zero misspellings are on record for NEPA in our index, since its letter pattern doesn't lend itself to common typo substitutions. Our confusable-pair dataset has no match for it, since no other headword is close enough in sound or shape to pair with it.
No documented word history exists for this headword, so its spelling is best read as a straightforward mapping from sound to letter. The correct English form is NEPA, spelled N-E-P-A.
Definition
- 1Initialism of National Environmental Policy Act.
Recorded use
Wiktionary exampleThese source excerpts show how NEPA appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
In addition, because analyses in prior route permit applications have utilized this methodology, the Applicants also conducted this environmental justice analysis in accordance with the U.S. Environmental Protection Agency (USEPA) Federal Interagency Working Group on Environmental Justice (EJ) and National Environmental Policy Act (NEPA) Committee’s publi…
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.
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "NEPA", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 4 letters (nearest by frequency rank).