Adjective
-
marked by great carelessness
"a most haphazard system of record keeping"
"slapdash work"
"slipshod spelling"
"sloppy workmanship"
Adverb
-
directly
"he ran bang into the pole"
"ran slap into her"
-
in a careless or reckless manner
"the shelves were put up slapdash"
- slam bang