lavish

Concise Oxford English Dictionary © 2008 Oxford University Press:
lavish/ˈlavɪʃ/

▶adjective

• 1 sumptuously rich, elaborate, or luxurious.

• 2 giving or given in profusion.

▶verb (lavish something on) bestow something in generous or extravagant quantities on.

– derivatives
lavishly adverb,
lavishness noun.

– origin ME (as n. denoting profusion): from OFr. lavasse ‘deluge of rain’, from laver ‘to wash’, from L. lavare.