instable

\ɛ̃s.tabl\

/\ɛ̃s.tabl\/ adj

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

The verdict

“instable” has 12 generated spelling variants in the French index at frequency #11,077. The variants make it a useful spelling check.

#11,077
frequency rank, French
3,561
“I” headwords
12
tracked misspellings
10
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Qui manque de stabilité.

Corpus desk

Index FR-instable · instable · French

instable · rank #11,077 · 12 variants · 10 confusables

  • FREQ-MID #11,077
  • LEN-LONG 8 letters
  • VOW-3 3 vowels
  • CONFUS-MID 10 pairs
  • VAR-MID 12 variants
  • BOOK-MID 3,561
  • PHOTO-FINISH inquiétudes

Nearest frequency peer: inquiétudes (-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.

Frequency neighbourhood for “instable”

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

corpus weight

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

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).

instable vs instance
75% similar
instable vs installe
88% similar
instable vs instaure
75% similar

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

Key facts for instable
PropertyValue
Headwordinstable
LanguageFrench
Part of speechAdjective
IPA\ɛ̃s.tabl\
Letters8
Frequency rank#11,077
Misspellings tracked12
Confusable pairs10
SourceWiktionary (kaikki.org)

Where “instable” sits in French frequency

This scale runs from the tiny cluster of words that carry ordinary speech (left) to the long tail of words almost nobody reaches for (right).instable lands here:

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

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 12 spelling variants around instable (IPA \ɛ̃s.tabl\), anadjective. Corpus frequency is #11,077 among 3,561 “I” headwords. Wiktionary lists 6 senses, so context still picks the gloss.

Our generated misspelling index lists 12 likely wrong-spelling variants for instable, with forms such as "innstable", "insatble", and "insstable". 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 10 confusable-pair relationships, "instance", "installe", "instaure", and more, where similar look or sound leads writers to substitute one word for another in context.

This entry carries no recorded etymology, so its spelling pattern is best understood through pronunciation rather than a traceable origin. The correct French form is instable, spelled I-N-S-T-A-B-L-E.

Definition

  1. 1
    Qui manque de stabilité.
  2. 2
    Qualifie un équilibre qui se détruit au moindre déplacement.
  3. 3
    Qui n'est pas régulier, qui varie.
  4. 4
    Qui se défait aisément.
  5. 5
    Qui perd facilement ses qualités mécaniques ou physiques.
  6. 6
    Qualifie un peuplement qui montre une vulnérabilité élevée aux dégâts causés par le vent.

Recorded use

Wiktionary examples

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

  1. Il est toujours imprudent d'approcher d'un ice-berg ; le centre de gravité peut être déplacé par la fusion de la partie submergée ; soit spontanément, soit sous la faible impulsion du sillage, l'énorme construction, en équilibre instable, éclate ou chavire.
  2. Homme instable au caractère instable.

This word in other languages

unstable(English)inestable(Español)unstet(Deutsch)

Common misspellings

Also misspelled as:

  • innstable
  • insatble
  • insstable
  • instabble
  • instabel
  • instablle
  • instalbe
  • instbale
  • insttable
  • intsable
  • isntable
  • nistable

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of instable - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.

innstable1insatble2insstable1instabble1instabel2instablle1instalbe2instbale2
Edit distance from "instable"

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.

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 September 3, 2026. Primary sources: Wiktionary (via kaikki.org) and FrequencyWords.

Frequently Asked Questions

How do you spell "instable"?
"instable" is spelled I-N-S-T-A-B-L-E. The IPA pronunciation is \ɛ̃s.tabl\.
What does "instable" mean?
As an adjective, "instable" means: Qui manque de stabilité.
What words are commonly confused with "instable"?
"instable" is commonly confused with "instance", "installe", "instaure". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "instable"?
The IPA (International Phonetic Alphabet) transcription for "instable" is \ɛ̃s.tabl\. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "instable" come from?
"instable" 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 "instable", not the corpus desk frequency band.

Same letter count

Frequency-ranked French headwords with 8 letters (nearest by frequency rank).

ignorant#11,071moniteur#11,085musicaux#11,088gagnante#11,061

Similar misspelling depth

Headwords with a similar count of attested misspellings (12 here; floor ≥5).

passionnés12 variantsprolonge12 variantsespérait12 variantsenchaîne12 variants

What to do next

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

  • "instable" maps to 10 confusable pairs in this vintage; the highest-scored is "instance". View pair
  • 12 edit-distance misspelling variants are generated for spell-check research on this headword. See variants
  • Usage frequency rank #11,077 among French headwords in this corpus. Corpus statistics
  • Browse more French words in the "I" letter cohort. I–Z browse

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