slapdash

adjectives

marked by great carelessness
"a most haphazard system of record keeping"; "slapdash work"; "slipshod spelling"; "sloppy workmanship"
haphazard, slapdash, slipshod, sloppy

adverbs

in a careless or reckless manner
"the shelves were put up slapdash"
slam-bang, slapdash
directly
"he ran bang into the pole"; "ran slap into her"
bang, bolt, slap, slapdash, smack