Unstable – Definition, Meaning and Synonyms

Definition of Unstable (adjective)

Unstable is an adjective to describe something that lacks steadiness, security, or reliability. It often refers to conditions, situations, or emotions likely to change unpredictably or collapse.

Examples

• The unstable bridge posed a danger to drivers.
• Her unstable emotions made it hard to comfort her.
• The government is unstable and may fall soon.
• Unstable weather caused delays in the flight schedule.
• His unstable health required constant medical attention.
• The unstable structure collapsed during the earthquake.
• She felt unstable after the shocking news.
• The unstable economy led to widespread unemployment.

Meaning

• Unsteady
• Insecure
• Unreliable

Pronunciation

• UK: /ʌnˈsteɪ.bl/ (un-STAY-bl)
• US: /ʌnˈsteɪ.bl/ (un-STAY-bl)

Synonyms

• Precarious
• Insecure
• Unsteady
• Erratic
• Volatile
• Wavering
• Unpredictable
• Shaky
• Fickle
• Temperamental
• Fragile
• Turbulent

Usage Tips for Unstable

• Used to describe things or people prone to change or collapse.
• It is commonly applied to emotional states, structures, and systems.
• Avoid using it for reliably steady situations.
• It often implies risk or danger due to unpredictability.
• It can describe both physical and abstract instability.

Origin

Unstable (Middle English, 1200-1400):

It is derived from Old French instable and Latin instabilis, which means not firm or unsteady.

Similar Words to Unstable

• Precarious
• Erratic
• Volatile
• Shaky
• Insecure
• Fragile
• Unpredictable
• Wavering
• Temperamental
• Turbulent

FAQs

Q: What is the meaning of unstable in Urdu?

Ans: In Urdu, unstable means غیر مستحکم or ناپائیدار.

Q: How do we use unstable in a sentence?

Ans: The unstable ladder wobbled dangerously, making it unsafe to climb.

Q: What’s the difference between unstable and unsteady?

Ans: Unstable refers to emotional, physical, or systemic unreliability, while unsteady often relates to physical movement or balance.

Related Words: