slap-bang
1. [ adverb ] in a violent or sudden or noisy manner
Synonyms: slam-bang
Examples:

"the pans fell slam-bang and woke the whole house"

2. [ adverb ] directly or immediately
Examples:

"it hit slap-bang in the middle"

3. [ adverb ] at excessive speeds
Examples:

"yachts ran slap-bang into the convoy at 15 knots an hour"

Similar spelling:   sloping
  slipping
  slopingly