1, 2. Lavish, prodigal, profuse refer to that which exists in abundance and is poured out copiously. Lavish suggests (sometimes excessive) generosity and openhandedness: lavish hospitality; much too lavish. Prodigal suggests wastefulness, improvidence, and reckless impatience of restraint: a prodigal extravagance. Profuse emphasizes abundance, but may suggest overemotionalism, exaggeration, or the like: profuse thanks, compliments, apologies.