slipshod
1. [ adjective ] marked by great carelessness
Synonyms: slapdash sloppy haphazard
Examples:

"a most haphazard system of record keeping" "slapdash work" "slipshod spelling" "sloppy workmanship"

Related terms: careless
Similar spelling:   slopshop
  slapshot
  slops
  slavish