Enter a clue or pattern or both:
The Clue
Discourse at length (10 letter answer)
The Answer
DISSERTATE
Tags
Notes
The answer DISSERTATE is so rare that it appears less than once every 2500 puzzles.
Definition
DISSERTATE as a verb:
1. (hold forth, discourse, dissertate) = talk at length and formally about a topic; "The speaker dissertated about the social politics in 18th century England"