economize

ECON'OMIZE, v.i. To manage pecuniary concerns with frugality; to make a prudent use of money, or of the means of saving or acquiring property. It is our duty to economize, in the use of public money, as well as of our own.

ECON'OMIZE, v.t. To use with prudence; to expend with frugality; as, to economize one's income.