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Use "nonsystematic" in a sentence
"This is called nonsystematic or diversifiable risk."
"The authors cite successful book and hardware stores with no rhyme or reason to the layout of merchandise, as well as inventors and scientists whose big breakthroughs came because of nonsystematic, improvisational experimenting."
"A nonsystematic investigation of random suspects in a serial-murder case can be a dangerously hypnotic fascination that leads nowhere."