Conserve means to protect or save, or to make fruit into preserves.
To use sparingly or economically; conserve:
To manage or use with thrift
To use, consume, spend, or expend thoughtlessly or carelessly.
Find another word for economise. In this page you can discover 5 synonyms, antonyms, idiomatic expressions, and related words for economise, like: conserve, husband, economize, save and waste.