| enhancement |
| fee(noun, money, reward, gift, gratuity) |
| gift(noun, prize, reward, tip, payment) |
| gravy(noun, return, prize, pay, reward) |
| grease(noun, benefit, prize, reward, tip) |
| hooking |
| incitement(noun, lure, bribe, incentive, bait) |
| interest |
| kickback(noun, reward, compensation, gift, bribe) |
| lagniappe(noun, reward, compensation, gift, privilege) |
| largess(privilege, plus, bonus, gratuity) |
| mollifier |
| perks(noun, benefit, prize, tip, profit) |
| perquisite(noun, reward, tip, recompense, compensation) |
| pitch |
| plum(noun, benefit, prize, reward, payment) |
| pourboire(noun, money, reward, gift, gratuity) |
| premium(noun, benefit, prize, payment, recompense) |
| pressure |
| prize(noun, benefit, reward, payment, recompense) |