ost

\ɔst\

/\ɔst\/ noun

The verdict

“ost” sits in 20 confusable pairs (corpus #19,617) as a noun. The look-alike neighbours are the real trap.

#19,617
frequency rank, French
1,642
“O” headwords
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - ou Armée au Moyen Âge.

Corpus desk

Index FR-ost · ost · French

ost · rank #19,617 · 0 variants · 20 confusables

  • FREQ-MID #19,617
  • LEN-MID 3 letters
  • VOW-1 1 vowel
  • CONFUS-HIGH 20 pairs
  • VAR-0 0 variants
  • BOOK-MID 1,642
  • PHOTO-FINISH opèrent

Nearest frequency peer: opèrent (-1 rank slots)

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.

Voisins de fréquence du confusable « ost »

Pairs de poids proche dans le corpus, séparés des confusables ci-dessous

corpus weight

What this shows Les barres placent « ost » face aux lemmes français les plus proches par rang, pas un reprint du bureau des confusables.

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).

ost vs ou
33% similar
ost vs ow
33% similar
ost vs ox
33% similar

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

Key facts for ost
PropertyValue
Headwordost
LanguageFrench
Part of speechNoun
IPA\ɔst\
Letters3
Frequency rank#19,617
Misspellings tracked0
Confusable pairs20
SourceWiktionary (kaikki.org)

Rang de corpus près des confusables de « ost »

La fréquence va de la poignée de mots du quotidien (gauche) à la longue queue presque jamais vue (droite).ostse place ici:

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

L'échelle est logarithmique (chaque tic ≈ 10× plus rare). Dans la même bande de rareté figurent « opèrent » (#19,616), « ouh » (#19,618), « paies » (#19,619). Parmi 1,642 lemmes en « O », « ost » est au #19,617. Source: FrequencyWords open word-frequency list.

Easy to mix with look-alikes

The spelling risk for ost is neighbouring look-alikes ("ou", "ow", …), not just typos; it is anoun pronounced \ɔst\. Frequency #19,617 among 1,642 “O” headwords. 2 recorded senses keep meaning in play.

Our edit-distance generator produced no likely misspellings for ost, a sign its spelling follows regular French conventions. It also participates in 20 confusable-pair relationships, "ou", "ow", "ox", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.

No explicit etymology string is stored for this entry, so its spelling pattern is best understood through pronunciation rather than a traceable origin. The correct French form is ost, spelled O-S-T.

Definition

  1. 1
    ou Armée au Moyen Âge.
  2. 2
    Troupe mise à disposition par un vassal à son suzerain. Le roi, suzerain suprême, peut lever l'Ost pour affronter une menace extérieure.

Recorded use

Wiktionary examples

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

  1. La bannière qui conduisait jadis les cent lances du baron Palamède de Sigognac contre l’ost des Sarrasins.
  2. Personne, au temps de saint Louis, n’aurait eu l’idée d’envoyer à la bataille un homme de savoir et d’entendement. Et l’on n’arrachait pas non plus le laboureur à la glèbe pour le mener à l’ost. Maintenant, on fait un devoir à un pauvre paysan d’être soldat.

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 French corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "ost"?
"ost" is spelled O-S-T. The IPA pronunciation is \ɔst\.
What does "ost" mean?
As a noun, "ost" means: ou Armée au Moyen Âge.
What words are commonly confused with "ost"?
"ost" is commonly confused with "ou", "ow", "ox". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "ost"?
The IPA (International Phonetic Alphabet) transcription for "ost" is \ɔst\. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "ost" come from?
"ost" is a French word. PlainSpell's reference spans five languages -- English, Spanish, Portuguese, French, and German -- with definitions, pronunciations, and spelling data for each.
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 French words by spelling shape

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

Same letter count

Frequency-ranked French headwords with 3 letters (nearest by frequency rank).

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

Source: FrequencyWords open word-frequency list