suddenly; abruptly; unexpectedly; (not) readily; (not) right away; (not) immediately
hasty preparation; cramming; goods prepared in a hurry (after they were already needed); makeshift; half-baked
makeshift; improvised; hurriedly prepared; hastily got up
bandwagon fan; fair-weather fan
impromptu skit; (theatrical) farce; extravaganza
sudden blindness; one suddenly blinded