The phrase "quick buck" is often used to describe a way of making money that is fast, easy and usually short-lived. However, using this term repeatedly can sound cliched and unoriginal. There are a number of synonyms for the phrase "quick buck" that can be used to add variety and depth to your language. Some examples of synonyms for "quick buck" include easy money, fast cash, instant gratification and immediate earnings. Other options may include words like instant reward, swift income, rapid cash and speedy profit. By using synonyms for "quick buck," you can add more texture and nuance to your language and avoid sounding repetitive.