WordNet: unsystematic

lacking systematic arrangement or method or organization; "unsystematic and fragmentary records"; "he works in an unsystematic manner"

• also see disorganised, disorganized

• also see irregular

unsystematic

• (englanti) systematic (antonym)
• (suomi) epäjärjestelmällinen (synonyymi)

• (suomi) epäsystemaattinen (synonyymi)