caffeine

noun caffeine

• perk — to become lively, cheerful, or vigorous, as after depression or sickness (usually followed by up): The patients all perked up when we played the piano for them.
• mud — wet, soft earth or earthy matter, as on the ground after rain, at the bottom of a pond, or along the banks of a river; mire.
• brew — If you brew tea or coffee, you make it by pouring hot water over tea leaves or ground coffee.
• cafe — A café is a place where you can buy drinks, simple meals, and snacks, but, in Britain, not usually alcoholic drinks.
• cappuccino — Cappuccino is coffee which is made using milk and has froth and sometimes powdered chocolate on top.