Sweeten/ˈswiːtn/ Definition 1 of 5Pro Tip 1/2Literal Sweetening Used to describe the physical act of making something taste sweet, often food or drinks. We can sweeten the sauce with a bit of sugar. Pro Tip 2/2Quantity Matters The amount used to sweeten can vary; too much can make the taste overpowering. Just sweeten it slightly; don’t overdo it.