Economize

v. t. [imp. & p. p. ECONOMIZED; p. pr. & vb. n. ECONOMIZING.] [Fr. économiser.] To use with prudence; to expend with frugality; as, to economize one's income. “Calculating how to economize time.” W. Irving.

v. i. To manage pecuniary concerns with frugality; to make a prudent use of money, or of the means of saving or acquiring property; as, careful to economize in order to grow rich.