over-explanation

noun

1. the act or process of explaining.
2. something that explains; a statement made to clarify something and make it understandable; exposition: an explanation of a poem.
3. a meaning or interpretation: to find an explanation for a mystery.
4. a mutual declaration of the meaning of words spoken, actions, motives, etc., with a view to adjusting a misunderstanding or reconciling differences: After a long and emotional explanation they were friends again.

noun

1. the act or process of explaining
2. a statement or occurrence that explains
3. a clarification of disputed terms or points; reconciliation

n.late 14c., from Latin explanationem (nominative explanatio), noun of action from past participle stem of explanare “to make plain or clear, explain,” literally “make level, flatten,” from ex- “out” (see ex-) + planus “flat” (see plane (n.1)).