expression, noun
eloquence; volubility; fluent speech
Describes someone who speaks smoothly and rapidly without hesitation, like water flowing down a standing board. Often used in the phrase 立て板に水を流すよう.
Antonyms: 横板に雨垂れ
彼の説明は立て板に水だった。
His explanation was as fluent as water running down a standing board.
She kept talking like water flowing down a standing board.