any act of molesting or interrupting or hindering or disquieting or agitating or arousing from a state of repose or otherwise depriving inhabitants of the peace and quiet to which they are entitled
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"