—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.
Derivatives:
lavishly adv. lavishness n.
Etymology: ME f. obs. lavish, lavas (n.) profusion f. OF lavasse deluge of rain f. laver wash
Useful english dictionary. 2012.