Synonyms for economize

save, conserve, husband, manage, stint, scrimp, retrench, cut back, skimp, be frugal, be prudent, pinch, cut costs, cut corners, meet expenses, keep within one's means, cut down, meet a budget, run a tight ship*, make both ends meet*, tighten one's belt*, save for a rainy day*, pinch pennies*; see also accumulate 1, maintain 3.

Antonyms spend*, waste, splurge.