The word "usagistic" is a relatively uncommon term, used to describe something that is characterized by or owed to habit or custom. Although there are not many direct synonyms for this particular word, several other terms can be used to convey a similar meaning. Some examples include "conventional," "traditional," "routine," "customary," "habitual," and "established." Each of these words refers to something that is commonly accepted or widely practiced within a particular culture or context. This makes them useful alternatives when describing actions, behaviors, or ideas that are influenced by habit or custom.