Excessplain |ikˈses splān|
Verb [reporting verb]
Make (an answer, idea, situation, or problem) more confusing to someone by describing it in excessive detail or revealing more facts or ideas than necessary. Excessplaining may occur after a “yes” or “no” question has been asked, or when basic assistance is needed by an individual looking to solve a problem.
“I understood Jeff’s billing question until he started excessplaining it to me.”
“I asked Dave if he wanted to get lunch from the cafeteria with me at noon. His excessplaination never answered my original question.”