lavish, munificent, overgenerous, too-generous, unsparing, unstinted, unstinting(adj)

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"

unstinting(Adjective)

generous and tireless with one's contributions of time, money, etc.

We thank her for her unstinting support of our new hospital.