1. to explain something in excessive detail or more than necessary
Usage: third person singular present tense

Examples

• The teacher overexplains simple concepts, making students lose interest.
• He overexplains every joke, which ruins the humor.
• The manual overexplains basic procedures that most users already know.
• She overexplains her decisions to avoid any confusion.
• The presenter overexplains technical details to a non-technical audience.
• When nervous, he overexplains his reasoning for every choice.