The word "wast economical with" implies a tendency to waste resources, whether intentionally or unintentionally. Antonyms for this phrase include "frugal," "thrifty," "efficient," "sparing," "economic," and "prudent." These terms suggest the opposite behavior, one characterized by careful use of resources and a reluctance to waste them. A person who is wasteful may be seen as careless, extravagant, or imprudent, while a person who is economical is considered practical, resourceful, and responsible. By avoiding waste and making the most of what they have, individuals can save money, conserve natural resources, and protect the environment.