off-the-cuff

Adjective

idiomatic not-comparable

(idiomatic) Extemporaneous; without prior preparation; spontaneous; impromptu.

Japanese Meaning

即興の、準備なしの、自発的な / 事前の準備をせず、その場で行われることを表す

Her off-the-cuff suggestion during the meeting led to a productive discussion.

会議中の彼女の即興の提案が建設的な議論につながった。

Sense（1）

(idiomatic) Extemporaneous; without prior preparation; spontaneous; impromptu.

He made a few off-the-cuff remarks before launching into his prepared speech.