ECONOMIZE
conserve, husband, economize, economise
(verb) use cautiously and frugally; “I try to economize my spare time”; “conserve your energy for the ascent to the summit”
save, economize, economise
(verb) spend sparingly, avoid the waste of; “This move will save money”; “The less fortunate will have to economize now”
Source: WordNet® 3.1
Verb
economize (third-person singular simple present economizes, present participle economizing, simple past and past participle economized)
(intransitive) To practice being economical (by using things sparingly or in moderation, and by avoiding waste or extravagance).
(transitive) To use frugally.
Source: Wiktionary
E*con"o*mize, v. t. [imp. & p. p. Economized; p. pr. & vb. n.
Economizing.] Etym: [Cf. F. Ă©conomiser.]
Definition: To manage with economy; to use with prudence; to expend with
frugality; as, to economize one's income. [Written also economise.]
Expenses in the city were to be economized. Jowett (Thucyd. ).
Calculating how to economize time. W. Irving.
E*con"o*mize, v. i.
Definition: To be prudently sparing in expenditure; to be frugal and
saving; as, to economize in order to grow rich. [Written also
economise.] Milton.
Source: Webster’s Unabridged Dictionary 1913 Edition