slam-bang

adjectives

violent and sudden and noisy
"a slam-bang collision"
is similar to
acting with or marked by or resulting from great force or energy or emotional intensity
"a violent attack"; "a violent person"; "violent feelings"; "a violent rage"; "felt a violent dislike"
domain usage
a characteristic language of a particular group (as among thieves)
"they don't speak our lingo"

adverbs

in a careless or reckless manner
"the shelves were put up slapdash"
with heedless speed
"yachts ran slap-bang into the convoy at 15 knots an hour"
in a violent or sudden or noisy manner
"the pans fell slam-bang and woke the whole house"