haphazard

without care; in a slapdash manner

• “the Prime Minister was wearing a gray suit and a white shirt with a soft collar, but his neck had become thinner and the collar stood away from it as if it had been bought haphazard”

dependent upon or characterized by chance

• “a haphazard plan of action”
• “his judgment is rather hit-or-miss”

marked by great carelessness

• “a most haphazard system of record keeping”
• “slapdash work”
• “slipshod spelling”
• “sloppy workmanship”