long-winded speech; tedious lecture; long boring talk
Refers to a speech, explanation, or lecture that is overly long and tiresome. Often used critically or humorously.
I'm always fed up with his long-winded speeches.
At the meeting, the department head launched into a tedious lecture, and everyone got bored.
長話 is any conversation that drags on too long, while 長談義 specifically suggests a one-sided, lecture-like speech that overstays its welcome.
Standard kanji spelling. 談義 refers to a discussion or lecture.
Variant spelling using 議 (deliberation) instead of 義. Less common but seen.
Compound of 長 (long) and 談義 (discourse, lecture). 談義 itself derives from a Buddhist term for a sermon or explanation of doctrine, later extended to mean any lengthy talk.