lavish
adj.
mid-15c., from Middle French lavasse (n.) "torrent of rain, deluge," from Old French lavache, from laver "to wash," from Latin lavare "to wash" (see lave). Related: Lavishly.
v.
1540s, from lavish, adj.. Related: Lavished; lavishing.
〔李〕[lav;-ishv.] a.过分慷慨的； 浪费的 v.浪费，滥花 ←lav,lut (L lavare,lutum)=to wash 洗