variableness

/ˈvɛriəbəlnəs/
noun
  1. The quality or state of being likely to change or vary; lack of consistency.
    • Her mood's variableness kept her friends guessing what she would do next.
    • Scientists study the variableness of ocean temperatures to understand climate patterns.
    • The variableness of the weather made it hard to plan the outdoor picnic.
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