noun, noun or participle which takes 'suru'
rambling talk; idle chatter
Refers to long-winded, often pointless or wandering speech. Can be used as a noun or with する to mean 'to ramble on'.
彼の漫言にはうんざりした。
I got fed up with his rambling talk.
会議で漫言するのはやめてください。
Please stop rambling during the meeting.