ninth

/naɪnθ/

//naɪnθ// adj

By · According to Wiktionary data (CC BY-SA) ·

"ninth" is a 5-letter English headword indexed on PlainSpell.

The verdict

“ninth” has 8 generated spelling variants in the English index at frequency #6,387. The variants make it a useful spelling check.

#6,387
frequency rank, English
1,534
“N” headwords
8
tracked misspellings
18
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The ordinal form of the number nine.

Corpus desk

Index EN-ninth · ninth · English

ninth · rank #6,387 · 8 variants · 18 confusables

  • FREQ-COMMON #6,387
  • LEN-MID 5 letters
  • VOW-1 1 vowel
  • CONFUS-HIGH 18 pairs
  • VAR-MID 8 variants
  • BOOK-MID 1,534
  • PHOTO-FINISH nicely

Nearest frequency peer: nicely (-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.

Rank peers near misspelling magnet “ninth”

Same rarity band: useful when a typo lands on a peer headword

corpus weight

What this shows “ninth” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

ninth vs nit
60% similar
ninth vs nth
60% similar
ninth vs nite
60% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for ninth
PropertyValue
Headwordninth
LanguageEnglish
Part of speechAdjective
IPA/naɪnθ/
Letters5
Frequency rank#6,387
Misspellings tracked8
Confusable pairs18
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “ninth”

Word frequency stretches from the small set of words we reach for constantly (left) out to the long tail barely used once in a while (right).ninthlands 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 “nicely” (#6,386), “nomination” (#6,388), “Newcastle” (#6,385). Among 1,534 “N” headwords, “ninth” is #6,387. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 8 spelling variants around ninth (IPA /naɪnθ/), anadjective. Corpus frequency is #6,387 among 1,534 “N” headwords. Dominant gloss: "The ordinal form of the number nine.".

Our generated misspelling index lists 8 likely wrong-spelling variants for ninth, with forms such as "innth", "ninht", and "ninnth". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. It also participates in 18 confusable-pair relationships, "nit", "nth", "nite", and more, where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: From Middle English nynthe, nynte, from Old English niġoþa, from Proto-Germanic *newundô; the -n- was reinserted by analogy with nine. Equivalent to nine + -th (ordinal suffix). The correct English form is ninth, spelled N-I-N-T-H.

Definition

  1. 1
    The ordinal form of the number nine.

Recorded use

Wiktionary examples

These source excerpts show how ninth appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. Ever since El Martinez started asking to be called by the gender-neutral pronouns “they/them” in the ninth grade, they have fielded skepticism in a variety of forms and from a multitude of sources about what it means to identify as nonbinary.
  2. Kash Patel, born to Gujarati parents in New York in 1980, was sworn in as the ninth director of the Federal Bureau of Investigation on Friday, in the presence of his girlfriend Alexis Wilkins and his family.

Etymology

From Middle English nynthe, nynte, from Old English niġoþa, from Proto-Germanic *newundô; the -n- was reinserted by analogy with nine. Equivalent to nine + -th (ordinal suffix).

Synonyms

9thIXthIX

This word in other languages

noveno(Español)neuvième(Français)neunte(Deutsch)nono(Português)

Common misspellings

Also misspelled as:

  • innth
  • ninht
  • ninnth
  • ninthh
  • nintth
  • nitnh
  • nninth
  • nnith

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of ninth - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.

innth2ninht2ninnth1ninthh1nintth1nitnh2nninth1nnith2
Edit distance from "ninth"

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 "ninth"?
"ninth" is spelled N-I-N-T-H. The IPA pronunciation is /naɪnθ/.
What does "ninth" mean?
As an adjective, "ninth" means: The ordinal form of the number nine.
What words are commonly confused with "ninth"?
"ninth" is commonly confused with "nit", "nth", "nite". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "ninth"?
The IPA (International Phonetic Alphabet) transcription for "ninth" is /naɪnθ/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "ninth"?
From Middle English nynthe, nynte, from Old English niġoþa, from Proto-Germanic *newundô; the -n- was reinserted by analogy with nine. Equivalent to nine + -th (ordinal suffix). 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 "ninth", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 5 letters (nearest by frequency rank).

penny#6,393petty#6,394ports#6,396kicks#6,371

Similar misspelling depth

Headwords with a similar count of attested misspellings (8 here; floor ≥5).

valued8 variantsbailey8 variantsassured8 variantstastes8 variants

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

Source: FrequencyWords open word-frequency list