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WORDNET DICTIONARY
ROGET THESAURUS

WORDNET DICTIONARY

Adverbial slap-bang has 2 senses

• slap-bang(r = adv.all) Array - directly or immediately; "it hit slap-bang in the middle"
• slap-bang(r = adv.all) slam-bang - in a violent or sudden or noisy manner; "the pans fell slam-bang and woke the whole house"

ROGET THESAURUS

slap-bang

Haste

N haste, urgency, despatch, dispatch, acceleration, spurt, spirt, forced march, rush, dash, speed, velocity, precipitancy, precipitation, precipitousness, impetuosity, brusquerie, hurry, drive, scramble, bustle, fuss, fidget, flurry, flutter, splutter, hasty, hurried, brusque, scrambling, cursory, precipitate, headlong, furious, boisterous, impetuous, hotheaded, feverish, fussy, pushing, in haste, in a hurry, in hot haste, in all haste, breathless, pressed for time, hard pressed, urgent, with haste, with all haste, with breathless speed, in haste, apace, amain, all at once, at short notice, immediately, posthaste, by cable, by express, by telegraph, by forced marches, hastily, precipitately, helter-skelter, hurry-skurry, holus-bolus, slapdash, slap-bang, full-tilt, full drive, heels over head, head and shoulders, headlong, a corps perdu, by fits and starts, by spurts, hop skip and jump, sauve qui peut, every man for himself, devil take the hindmost, no time to be lost, no sooner said than done, a word and a blow, haste makes waste, maggiore fretta minore atto, ohne Hast aber ohne Rast stand not upon the order, swift, swift, you dragons of the night.

For further exploring for "slap-bang" in Webster Dictionary Online