unsystematic

/ˈʌnˈsɪstəˌmædɪk/

Definitions of unsystematic

1. adjective

   lacking systematic arrangement or method or organization
   “unsystematic and fragmentary records”

   “he works in an unsystematic manner”

   synonyms:

   disorganised, disorganized

   lacking order or methodical arrangement or function

   irregular

   contrary to rule or accepted order or general practice

   antonyms:

   systematic

   characterized by order and planning

   organized

   methodical and efficient in arrangement or function

   regular

   in accordance with fixed order or procedure or principle