What is "overexplaining"

Usage examples of "overexplaining".

Here, as nowhere else, one walks a tightrope between overexplaining and overassuming, between boring the reader with too many details and losing the reader by not providing enough.

The red sphere, the 3V announcer was overexplaining, was the power sphere, which had to be kept separated from the people, because of the radiation.

He always did that when he was nervous, overexplaining what they already knew.