To give out extremely generously; to squander.
"After winning the lottery, he decided to lavish his entire fortune on a week-long vacation in Paris."
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"
Expending or bestowing profusely; profuse; prodigal.
"The king decided to lavish his subjects with gold and jewels after their victory in battle."