frugally
Definitions
In a way that is sparing or economical with regard to money or food.
In a simple, plain, or cost-effective manner.
Examples
By living frugally during her college years, she was able to pay off her student loans much faster than expected.
The family managed to save enough for a vacation by shopping frugally and cooking most of their meals at home.
Synonyms
thriftily economically sparingly parsimoniously prudently cheaply