Adjective slapdash has 1 sense
  1. haphazard, slapdash, slipshod, sloppy - marked by great carelessness; "a most haphazard system of record keeping"; "slapdash work"; "slipshod spelling"; "sloppy workmanship"
    Antonym: careful (indirect, via careless)
,Adverbial slapdash has 2 senses
  1. slapdash, slam-bang - in a careless or reckless manner; "the shelves were put up slapdash"
  2. bang, slap, slapdash, smack, bolt - directly; "he ran bang into the pole"; "ran slap into her"
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