Antonyms for the word "more unwasteful" could include "wasteful," "extravagant," "profligate," or "reckless." These words describe a behavior that goes against the idea of being unwasteful, suggesting a lack of care or consideration for saving resources. Other antonyms might include "spendthrift," "lavish," "squandering," or "prodigal." These words imply a careless attitude towards money or resources, where the focus is on immediate gratification rather than responsible use. Developing habits that lean towards being more unwasteful can help reduce your environmental footprint, save money, and foster a more mindful and purposeful way of life.