The word "excurse" is a relatively uncommon term, meaning to wander off course or to deviate from the original topic or subject. However, there are plenty of other words that can be used to convey a similar meaning. Some synonyms for "excurse" include: digress, meander, stray, veer, ramble, drift, and diverge. These words all suggest a movement away from the original path or topic and can be used interchangeably with "excurse" in many contexts. Other similar words might include "wander," "roam," or "detour," all of which imply a route that differs from the expected or planned path.