The antonyms for the term "most squandered" are "utilized," "saved," and "conserved." Utilized refers to effectively making use of resources without wasting any. Saved denotes preserving resources, goods, or money for future use. Conserved describes the practice of preventing the depletion of natural resources like water, air, or land. These terms signify a responsible approach towards utilizing and preserving resources. By adopting these practices, one can ensure there is no wastage and also maintain ecological balance. On the contrary, most squandered refers to the careless or wasteful use of resources. Therefore, it is vital to adopt practices that highlight the antonyms of most squandered to preserve resources and protect the environment.