nonparametric

adj

"nonparametric" is a 13-letter English headword indexed on PlainSpell.

The verdict

“nonparametric” is uncommon English (frequency #80,711 among 1,534 “N” headwords), classed as an adjective. The kind of spelling people second-guess.

#80,711
frequency rank, English
1,534
“N” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Having a flexible number or nature of parameters which are not fixed in advance.

Corpus desk

Index EN-nonparametric · nonparametric · English

nonparametric · rank #80,711 · 0 variants · 0 confusables

  • FREQ-RARE #80,711
  • LEN-MEGA 13 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 1,534
  • PHOTO-FINISH NPN

Nearest frequency peer: NPN (+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 “nonparametric”

Lower corpus rank = more everyday usage (inverted bar length for readability)

corpus weight

What this shows Bars show where “nonparametric” sits against the nearest ranked English headwords in the FrequencyWords band, not a reprint of letter-browse containment.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for nonparametric
PropertyValue
Headwordnonparametric
LanguageEnglish
Part of speechAdjective
Letters13
Frequency rank#80,711
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “nonparametric” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right).nonparametriclands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Same rarity band neighbours include “NPN” (#80,712), “NRDC” (#80,713), “nitwit” (#80,708). Source: FrequencyWords open word-frequency list.

Rare enough to double-check

nonparametric is uncommon English at frequency #80,711 among 1,534 “N” headwords, classed as anadjective. Rarity is why readers land here mid-draft. 2 senses are on record.

nonparametric has no tracked misspelling variants, which points to an orthography that plays by predictable English rules. No confusable counterpart is on file for this word, a sign it's visually distinctive enough not to be mixed up with another word.

Etymologically, the entry records: From non- + parametric. The correct English form is nonparametric, spelled N-O-N-P-A-R-A-M-E-T-R-I-C.

Definition

  1. 1
    Having a flexible number or nature of parameters which are not fixed in advance.
  2. 2
    Free of assumptions about the frequency distributions of the variables being assessed.

Etymology

From non- + parametric.

Synonyms

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.

Frequently Asked Questions

How do you spell "nonparametric"?
"nonparametric" is spelled N-O-N-P-A-R-A-M-E-T-R-I-C.
What does "nonparametric" mean?
As an adjective, "nonparametric" means: Having a flexible number or nature of parameters which are not fixed in advance.
What is the origin of the word "nonparametric"?
From non- + parametric. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "nonparametric", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 13 letters (nearest by frequency rank).

What to do next

You've looked up "nonparametric". Here's where to go from here.

  • Usage frequency rank #80,711 among English headwords in this corpus. Corpus statistics
  • Browse more English words in the "N" letter cohort. N–Z browse
  • PlainSpell rotates a curated Word of the Day from the English corpus, a passive way to discover vocabulary. Word of the Day

PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.

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.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list