“Parsimonious” means unwilling to spend money. Someone who is parsimonious is very frugal – some might even say “stingy.” While the word “parsimonious” can be used for anyone who keeps a tight hold on their spending, it’s often applied to people who go a bit too far in that direction.

Example:  “I don’t enjoy going to restaurants with him; he’s so parsimonious he calculates the bill down to the last penny, and never leaves more than a few dollars for the server.”