Standard Lemma guide

instability

noun · 6 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • Received-Pronunciation: /ɪnstəˈbɪlɪti/
  • Canada, General-American: /ˌɪnstəˈbɪləti/
  • Canada, General-American: [ˌɪnstəˈbɪləɾi]
  • Colorado Recorded audio is listed in the source snapshot.
  • Texas: Recorded audio is listed in the source snapshot.
  • rhymes with -ɪlɪti
  • CMU ARPABET: IH2 N S T AH0 B IH1 L IH0 T IY0 Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

The quality of being unstable.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: unstability, unstableness, volatility

Antonyms: none provided

2

noun

Meaning 2

A state that is not in equilibrium, or in which a small change has a large irreversible effect.

Definition source: English Wiktionary via Wiktextract

Usage: countable

Topics: natural-sciences, physical-sciences, physics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

the quality or attribute of being unstable and irresolute

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: unstableness

Antonyms: stability

Broader terms: unsteadiness

Narrower terms: shakiness

4

noun

Meaning 4

unreliability attributable to being unstable

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: undependability, undependableness, unreliability, unreliableness

5

noun

Meaning 5

an unstable order

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: stability

Broader terms: disorder

6

noun

Meaning 6

a lack of balance or state of disequilibrium

Definition source: Princeton WordNet 3.0

Examples

  • a hormonal imbalance

Meaning relationships

Synonyms: imbalance, unbalance

Antonyms: none provided

Broader terms: disequilibrium

History

Etymology

From Middle French instabilité, from Latin instabilitas. Morphologically in- + stability.

Across languages

Translations

52 source translations are retained for this English entry.

  • Asturian: inestabilidá — quality of being unstable
  • Azerbaijani: sabitsizlik — quality of being unstable
  • Bulgarian: нестабилност (nestabilnost) — quality of being unstable
  • Catalan: inestabilitat — quality of being unstable
  • Chinese Mandarin: 不穩定 /不稳定 (bù wěndìng) — quality of being unstable
  • Chinese Mandarin: 不穩定性 /不稳定性 (bù wěndìng xìng) — quality of being unstable
  • Chinese Mandarin: 不穩固 /不稳固 (bù wěngù) — quality of being unstable
  • Chinese Mandarin: 不穩固性 /不稳固性 (bù wěngù xìng) — quality of being unstable
  • Dutch: instabiliteit — quality of being unstable
  • Finnish: epävakaus — quality of being unstable
  • French: instabilité — quality of being unstable
  • Galician: inestabilidade — quality of being unstable
  • Georgian: არამდგრადობა (aramdgradoba) — quality of being unstable
  • Georgian: არასტაბილურობა (arasṭabiluroba) — quality of being unstable
  • German: Instabilität — quality of being unstable
  • Ancient Greek: ἀκαταστασία (akatastasía) — quality of being unstable
  • Hindi: असंतुलन (asantulan) — quality of being unstable
  • Irish: éagobhsaíocht — quality of being unstable
  • Italian: instabilità — quality of being unstable
  • Italian: dissesto — quality of being unstable
  • Latin: instabilitas — quality of being unstable
  • Malay: ketidakstabilan — quality of being unstable
  • Norwegian Bokmål: ustabilitet — quality of being unstable
  • Norwegian Nynorsk: ustabilitet — quality of being unstable
  • Persian: ناپایداری (nâpâydâri) — quality of being unstable
  • Polish: niestabilność — quality of being unstable
  • Portuguese: instabilidade — quality of being unstable
  • Russian: нестаби́льность (nestabílʹnostʹ) — quality of being unstable
  • Russian: неусто́йчивость (neustójčivostʹ) — quality of being unstable
  • Russian: непро́чность (nepróčnostʹ) — quality of being unstable
  • Russian: непостоя́нство (nepostojánstvo) — quality of being unstable
  • Russian: зы́бкость (zýbkostʹ) — quality of being unstable
  • Russian: неуравнове́шенность (neuravnovéšennostʹ) — quality of being unstable
  • Spanish: inestabilidad — quality of being unstable
  • Tajik: нопойдорӣ (nopoydori) — quality of being unstable
  • Turkish: dengesizlik — quality of being unstable
  • Ukrainian: нестабі́льність (nestabílʹnistʹ) — quality of being unstable
  • Ukrainian: несті́йкість (nestíjkistʹ) — quality of being unstable
  • Bulgarian: нестабилност (nestabilnost) — physical state
  • Chinese Mandarin: 不穩定 /不稳定 (bù wěndìng) — physical state
  • Chinese Mandarin: 不穩定性 /不稳定性 (bù wěndìng xìng) — physical state
  • Chinese Mandarin: 不穩固 /不稳固 (bù wěngù) — physical state
  • Chinese Mandarin: 不穩固性 /不稳固性 (bù wěngù xìng) — physical state
  • Dutch: instabiliteit — physical state
  • Finnish: epätasapaino — physical state
  • German: Instabilität — physical state
  • Ancient Greek: ἀκαταστασία (akatastasía) — physical state
  • Malay: ketidakstabilan — physical state
  • Russian: неусто́йчивость (neustójčivostʹ) — physical state
  • Russian: непро́чность (nepróčnostʹ) — physical state
  • Spanish: inestabilidad — physical state
  • Turkish: dengesizlik — physical state
Real reading context

instability in complete knowledge articles