randomness

Noun

• the quality of lacking any predictable order or plan

• (thermodynamics) a thermodynamic quantity representing the amount of energy in a system that is no longer available for doing mechanical work
  • entropy increases as matter and energy in the universe degrade to an ultimate state of inert uniformity
    

Related words

• Synonyms: 
  haphazardness , stochasticity , noise , entropy , S