Synonyms for Lavish (same or very similar meaning)
WordNet sense 1 (expend profusely; also used with abstract nouns):
shower, showerWordNet sense 2 (characterized by extravagance and profusion):
lush, plush, plushy, lucullanWordNet sense 3 (very generous):
munificent, overgenerous, prodigal, unsparing, unstinting, too-generous, unstintedWordNet sense 4 (willing to give and share unstintingly):
generousFrom the ODE community, based on WordNetadd/edit