"lavishest" in the adjective sense
1. lavish, munificent, overgenerous, too-generous, unsparing, unstinted, unstinting
very generous
"distributed gifts with a lavish hand"
"the critics were lavish in their praise"
"a munificent gift"
"his father gave him a half-dollar and his mother a quarter and he thought them munificent"
"prodigal praise"
"unsparing generosity"
"his unstinted devotion"
"called for unstinting aid to Britain"
2. lavish, lucullan, plush, plushy
characterized by extravagance and profusion
"a lavish buffet"
"a lucullan feast"
Source: WordNet® (An amazing lexical database of English)
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