adj. & v.
adj. 1 giving or producing in large quantities; profuse. 2 generous, unstinting. 3 excessive, over-abundant.
v.tr. (often foll. by on) bestow or spend (money, effort, praise, etc.) abundantly. lavishly adv. lavishness n.
[ ME f. obs. lavish, lavas (n.) profusion f. OF lavasse deluge of rain f. laver wash ]