Other forms: stingiest; stingier
If you are looking to describe someone with a Scrooge- or Grinch-like tendency to pinch his pennies, then stingy can be your adjective of choice. Or, if you are looking to describe something you have too little of — like a 43-second coffee break — you can use stingy as well.
The adjective stingy (pronounced with a soft "g") is likely derived from the adjective stingy (pronounced with a hard "g"), which means "biting, sharp, or stinging." Although stingy is usually used to describe an ungenerous or miserly person, stingy can also be used to describe a larger entity: "People were no longer able to buy homes due to the stingy lending policies of the banks."