discourse (up)on (something)

discourse (up)on (something)

To talk about something at length. If he discourses about this abstract theory any longer, I'm going to fall asleep.
See also: discourse
Farlex Dictionary of Idioms.

discourse (up)on

someone or something to lecture about someone or something. (Upon is formal and less commonly used than on.) I would like to discourse upon this matter awhile. The committee chose to discourse on Tom and his latest fiasco rather than deal with the budgetary problems it faces.
See also: discourse, on
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • discourse
  • discourse on
  • keyed up about (something)
  • the sandman's coming
  • grapes
  • jaw away
  • be in the Land of Nod
  • in the Land of Nod
  • read (oneself) to sleep
  • read oneself to sleep