Na-adjective (keiyodoshi), Adverb (fukushi)
thoroughly; completely; utterly
彼女はさんざん私の事をののしった。She called me many terrible things. severely; harshly; terribly; miserably; wretchedly; badly
Na-adjective (keiyodoshi)
scattered; disconnected; dispersed; smashed into tiny pieces
Archaic
Also written 散散【さんざん】