noun
foolish talk; nonsense; idle chatter
Refers to silly, pointless, or nonsensical talk. Often used in a self-deprecating or dismissive way about one's own or others' rambling.
彼の話はいつも駄弁ばかりで、聞く価値がない。
His talk is always just nonsense, not worth listening to.
会議中に駄弁を弄するのはやめてください。
Please stop spouting foolish talk during the meeting.
Compound of 駄 (da, 'poor, worthless') and 弁 (ben, 'speech, dialect'). The exact historical derivation is uncertain, but the word likely emerged as a literary term for worthless or foolish talk.