Synonyms for Excursive (same or very similar meaning)
WordNet sense 1 ((of e.g. speech and writing) tending to depart from the main point or cover a wide range of subjects):
digressive, discursive, ramblingWordNet sense 2 (extended senses; not direct in manner or language or behavior or action):
indirectFrom the ODE community, based on WordNetadd/edit