slambang

abrupt careless expeditious hurried ill-advised impulsive quick rapid reckless sudden swift urgent

PDQ agile brash breakneck brief brisk cursory eager fast fiery fleet fleeting foolhardy harefooted headlong heedless impatient impetuous incautious inconsiderate madcap on the double passing perfunctory precipitate prompt pronto quickened quickie rash rushed short slapdash snappy superficial thoughtless

careful cautious kind leisurely slow sluggish thoughtful wise

delayed lazy lingering loitering