"As a matter of course" is a phrase that implies that something is happening automatically or routinely. There are several synonyms that can be used to replace this expression, such as "as usual," "naturally," "habitually," "typically," "regularly," and "customarily." These words indicate that a particular action or event occurs regularly or frequently without any conscious effort or intention. Furthermore, other synonyms for "as a matter of course" include "automatically," "unconsciously," "instinctively," and "involuntarily." These words connote that something is done reflexively or without conscious awareness. Thus, by replacing "as a matter of course" with any of these synonyms, the sentence can convey the same meaning in a more varied and engaging way.