VERB + ECONOMIZE
don't, let's
ECONOMIZE + NOUN
food
PREP.
in, on
verb
To practice being economical (by using things sparingly or in moderation, and by avoiding waste or extravagance).
To use frugally.
verb — use cautiously and frugally
verb — spend sparingly, avoid the waste of
Let's economize on time.
Living is dear, accordingly we have to economize.
We don't economize on food in our school.
A coupon industry publication estimates that 89 percent of American households redeem coupons as a way to economize.