Speak at some length (4,5)
I believe the answer is:
hold forth
(Other definitions for hold forth that I've seen before include "Show how to" , "Speak at length" , "lecture" , "Present" , "Declaim" .)
I believe the answer is:
hold forth
(Other definitions for hold forth that I've seen before include "Show how to" , "Speak at length" , "lecture" , "Present" , "Declaim" .)