Origin of systematic
Can be confusedsystematic systemic
Examples from the Web for unsystematic
The very religious, like Eagleton, may take offense at the brusque, selective, and unsystematic consideration of their creeds.Alain de Botton on the Benefits of Religion Without God|The Daily Beast|March 10, 2012|DAILY BEAST
It will look a little weak and unsystematic, which concerns me and some bad things could muddle through.
They are not honest; they are only ineffectual and unsystematic in their iniquity.
He was unsystematic in his habits, and incompetent in money matters.History of the Moravian Church|J. E. Hutton
Unhappily, with the Goncourts these indications are unsystematic and even contradictory.Rene Mauperin|Edmond de Goncourt and Jules de Goncourt
His style is unsystematic, brief and abounding in symbolical expression.
The demand was a heavy one to make upon the most unsystematic system ever known, yet it survived the ordeal.The Press-Gang Afloat and Ashore|John R. Hutchinson