What is the meaning of haphazard?

adjective

• Dependent upon or characterized by chance.
  • usage: "a haphazard plan of action"; "his judgment is rather hit-or-miss"
  • synonyms: hit-or-miss
• Marked by great carelessness.
  • usage: "a most haphazard system of record keeping"; "slapdash work"; "slipshod spelling"; "sloppy workmanship"
  • synonyms: slapdash, slipshod, sloppy

adverb

• Without care; in a slapdash manner.
  • usage: "the Prime Minister was wearing a grey 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"
  • synonyms: haphazardly