"Be going to" is used to indicate future plans or intentions. However, there are several synonyms that can be used in its place. Some examples include "will," "shall," "aiming," "planning," "preparing," "expecting," "anticipating," "intending," and "projecting." Each of these words can add a different nuance or emphasis to the sentence. For instance, "will" is a straightforward and simple way to express future actions, while "planning" suggests that careful consideration has been taken in making the decision. "Anticipating" emphasizes the excitement or eagerness for a future event. By using synonyms for "be going to," a writer or speaker can add variety and depth to their language.