"a haphazard plan of action""his judgment is rather hit-or-miss"
2. marked by great carelessness;
"a most haphazard system of record keeping""slapdash work""slipshod spelling""sloppy workmanship"
Adverb
1. 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"