The word "more microbic" refers to something that has a higher level of microorganisms or bacteria. Some possible antonyms for this word could include "sterile," "aseptic," "hygienic," "clean," or "sanitized." These words denote the opposite of "more microbic" and may apply to spaces that have undergone thorough cleaning, disinfection, or sterilization. In medical settings, aseptic techniques are employed to prevent the spread of infections and maintain a sterile environment. Similarly, hygienic practices such as hand washing, proper food handling, and waste disposal can help reduce the presence of harmful microorganisms in homes, schools, and other communal areas.