Pronunciation: (slam'bang'),[key] —adv.Informal. 1. with noisy violence: He drove slam-bang through the garage door. 2. quickly and carelessly; slapdash.
—adj. 1. noisy and violent.
2. excitingly fast-paced, esp. in a noisy and violent way; action-filled; thrilling: a slam-bang ending to the movie. 3. vigorous and fast but careless; slapdash.
4. outstanding or powerful; excellent: a slam-bang keynote address.
—v.i. to act or proceed in a chaotic or disorderly fashion: The children slam-banged into the furniture.