"Masto-" is a Greek prefix that refers to the breast or mammary glands. It is commonly used in scientific and medical terms. However, in order to diversify our vocabulary and better convey our ideas, it is beneficial to explore synonyms for this word. Some synonyms for "masto-" include "mammo-", "mammary-", and "breast-". These prefixes can be combined with other terms to form related words. For instance, "mammon" refers to wealth or material possessions, while "mammoth" signifies a large, extinct mammal. By incorporating synonyms, we can enhance our communication skills and express ourselves more precisely in various contexts.