nonproliferation
"nonproliferation" is a 16-letter English headword indexed on PlainSpell.
The verdict
“nonproliferation” is uncommon English (frequency #54,360 among 24,391 “N” headwords), classed as a noun. The kind of spelling people second-guess.
- #54,360
- frequency rank, English
- 24,391
- “N” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Opposition to the spread of something, especially nuclear weapons.
Corpus desk
Index EN-nonproliferation · nonproliferation · English
nonproliferation · rank #54,360 · 0 variants · 0 confusables
- FREQ-RARE #54,360
- LEN-MEGA 16 letters
- VOW-7 7 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-DENSE 24,391
- PHOTO-FINISH noninvasive
Nearest frequency peer: noninvasive (-1 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 “nonproliferation”
Lower corpus rank = more everyday usage (inverted bar length for readability)
- nong
nong
45,643 corpus weight
- noninvasive
noninvasive
45,642 corpus weight
- nonprolifer…
nonproliferation
45,641 corpus weight
- NSE
NSE
45,640 corpus weight
- nyssa
nyssa
45,639 corpus weight
- odorless
odorless
45,637 corpus weight
What this shows Bars show where “nonproliferation” sits against the nearest ranked English headwords in the FrequencyWords band, not a reprint of letter-browse containment.
| Property | Value |
|---|---|
| Headword | nonproliferation |
| Language | English |
| Part of speech | Noun |
| Letters | 16 |
| Frequency rank | #54,360 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “nonproliferation” sits in English frequency
Rare enough to double-check
nonproliferation is uncommon English at frequency #54,360 among 24,391 “N” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "Opposition to the spread of something, especially nuclear weapons.".
We couldn't generate a plausible misspelling set for nonproliferation, and the word's spelling is regular enough that our generator found nothing worth flagging. Our confusable-pair dataset has no match for it, suggesting its spelling stands apart enough that readers rarely confuse it with something else.
Etymologically, the entry records: From non- + proliferation. The correct English form is nonproliferation, spelled N-O-N-P-R-O-L-I-F-E-R-A-T-I-O-N.
Definition
- 1Opposition to the spread of something, especially nuclear weapons.
Recorded use
Wiktionary exampleThese source excerpts show how nonproliferation appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Nuclear Nonproliferation Treaty
Etymology
From non- + proliferation.
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 May 6, 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 "nonproliferation", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 16 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.