unstable Definition

  • 1not firmly fixed or not constant; liable to change or break
  • 2mentally ill or disturbed

Using unstable: Examples

Take a moment to familiarize yourself with how "unstable" can be used in various situations through the following examples!

  • Example

    The political situation in the country is very unstable.

  • Example

    The patient's condition is still unstable.

  • Example

    The economy is becoming increasingly unstable.

unstable Synonyms and Antonyms

Antonyms for unstable

Phrases with unstable

  • having moods that are unpredictable and changeable


    She was emotionally unstable after the breakup.

  • a relationship that is not steady or secure


    Their relationship was very unstable and they broke up after a few months.

  • a personality that is not consistent or predictable


    He has an unstable personality and can be difficult to work with.


Summary: unstable in Brief

The term 'unstable' [ʌnˈsteɪbl] refers to something that is not firmly fixed or constant, and can change or break easily. It can also refer to someone who is mentally ill or disturbed. Examples include 'The political situation in the country is very unstable,' and 'The patient's condition is still unstable.' Phrases like 'emotionally unstable' and 'unstable relationship' denote unpredictability and inconsistency.

How do native speakers use this expression?