'Slam-bang' definitions:

Definition of 'slam-bang'

(from WordNet)
adverb
In a careless or reckless manner; "the shelves were put up slapdash" [syn: slapdash, slam-bang]
adverb
With heedless speed; "yachts ran slap-bang into the convoy at 15 knots an hour"
adverb
In a violent or sudden or noisy manner; "the pans fell slam- bang and woke the whole house" [syn: slam-bang, slap- bang]
adjective
Violent and sudden and noisy; "a slam-bang collision"

Definition of 'Slam-bang'

From: GCIDE
  • Slam-bang \Slam"-bang`\, adv. With great violence; with a slamming or banging noise. [Colloq.] [1913 Webster] Slamkin