Definitions

1. adjective

the most frugal or sparing in using or providing something

“After years of living on a tight budget, she became the scrimpiest person in the office.”

2. adjective (comparative)

more frugal or sparing than others in using or providing something

“He’s always been the scrimpiest person in our group of friends.”

3. noun

the quality of being frugal or sparing in using or providing something

“Generosity is the opposite of scrimpiest behavior.”