The difference between Unstable and Variable

When used as adjectives, unstable means having a strong tendency to change, whereas variable means able to vary.

Unstable is also verb with the meaning: to release (an animal) from a stable.

Variable is also noun with the meaning: something that is variable.

check bellow for the other definitions of Unstable and Variable

  1. Unstable as an adjective:

    Having a strong tendency to change.

  2. Unstable as an adjective:

    Fluctuating; not constant.

  3. Unstable as an adjective:


  4. Unstable as an adjective:


  5. Unstable as an adjective (chemistry):

    Readily decomposable.

  6. Unstable as an adjective (physics):

    Radioactive, especially with a short half-life.

  1. Unstable as a verb (transitive):

    To release (an animal) from a stable.

  1. Variable as an adjective:

    Able to vary.


    "variable winds or seasons; a variable quantity"

  2. Variable as an adjective:

    Likely to vary.

  3. Variable as an adjective:

    Marked by diversity or difference.

  4. Variable as an adjective (mathematics):

    Having no fixed quantitative value.

  5. Variable as an adjective (biology):

    Tending to deviate from a normal or recognized type.

  1. Variable as a noun:

    Something that is variable.

  2. Variable as a noun:

    Something whose value may be dictated or discovered.


    "There are several variables to consider here."

  3. Variable as a noun (mathematics):

    A quantity that may assume any one of a set of values.

  4. Variable as a noun (mathematics):

    A symbol representing a variable.

  5. Variable as a noun (programming):

    A named memory location in which a program can store intermediate results and from which it can read them.

  6. Variable as a noun (astronomy):

    A variable star.

  7. Variable as a noun (nautical):

    A shifting wind, or one that varies in force.

  8. Variable as a noun (nautical, in the plural):

    Those parts of the sea where a steady wind is not expected, especially the parts between the trade-wind belts.