To talk wildly and irresponsibly; to make groundless and absurd statements; utterly false and unreliable.
他的故事总是漫诞不稽，让人难以相信。
His stories are always wild and unreliable, making them hard to believe.
Next Idiom
To talk wildly and irresponsibly; to make groundless and absurd statements; utterly false and unreliable.